diff --git a/bin/bnf_to_cnf/poetry.lock b/bin/bnf_to_cnf/poetry.lock
index 6541831..e29b677 100644
--- a/bin/bnf_to_cnf/poetry.lock
+++ b/bin/bnf_to_cnf/poetry.lock
@@ -1,85 +1,88 @@
 [[package]]
-category = "dev"
-description = "Disable App Nap on OS X 10.9"
-marker = "python_version >= \"3.4\" and sys_platform == \"darwin\" or sys_platform == \"darwin\""
 name = "appnope"
+version = "0.1.0"
+description = "Disable App Nap on OS X 10.9"
+category = "dev"
 optional = false
 python-versions = "*"
-version = "0.1.0"
 
 [[package]]
-category = "dev"
-description = "Atomic file writes."
-marker = "sys_platform == \"win32\""
 name = "atomicwrites"
+version = "1.3.0"
+description = "Atomic file writes."
+category = "dev"
 optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
-version = "1.3.0"
 
 [[package]]
-category = "dev"
-description = "Classes Without Boilerplate"
 name = "attrs"
+version = "19.3.0"
+description = "Classes Without Boilerplate"
+category = "dev"
 optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
-version = "19.3.0"
+
+[package.extras]
+azure-pipelines = ["coverage", "hypothesis", "pympler", "pytest (>=4.3.0)", "six", "zope.interface", "pytest-azurepipelines"]
+dev = ["coverage", "hypothesis", "pympler", "pytest (>=4.3.0)", "six", "zope.interface", "sphinx", "pre-commit"]
+docs = ["sphinx", "zope.interface"]
+tests = ["coverage", "hypothesis", "pympler", "pytest (>=4.3.0)", "six", "zope.interface"]
 
 [[package]]
-category = "dev"
-description = "Specifications for callback functions passed in to an API"
 name = "backcall"
+version = "0.1.0"
+description = "Specifications for callback functions passed in to an API"
+category = "dev"
 optional = false
 python-versions = "*"
-version = "0.1.0"
 
 [[package]]
-category = "dev"
-description = "Cross-platform colored terminal text."
-marker = "sys_platform == \"win32\" or platform_system == \"Windows\" or python_version >= \"3.4\" and sys_platform == \"win32\""
 name = "colorama"
+version = "0.4.3"
+description = "Cross-platform colored terminal text."
+category = "dev"
 optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
-version = "0.4.3"
 
 [[package]]
-category = "dev"
-description = "A utility for ensuring Google-style docstrings stay up to date with the source code."
 name = "darglint"
+version = "1.1.0"
+description = "A utility for ensuring Google-style docstrings stay up to date with the source code."
+category = "dev"
 optional = false
 python-versions = ">=3.5"
-version = "1.1.0"
 
 [[package]]
-category = "dev"
-description = "Decorators for Humans"
 name = "decorator"
+version = "4.4.1"
+description = "Decorators for Humans"
+category = "dev"
 optional = false
 python-versions = ">=2.6, !=3.0.*, !=3.1.*"
-version = "4.4.1"
 
 [[package]]
-category = "dev"
-description = "Discover and load entry points from installed packages."
 name = "entrypoints"
+version = "0.3"
+description = "Discover and load entry points from installed packages."
+category = "dev"
 optional = false
 python-versions = ">=2.7"
-version = "0.3"
 
 [[package]]
-category = "dev"
-description = "A platform independent file lock."
 name = "filelock"
+version = "3.0.12"
+description = "A platform independent file lock."
+category = "dev"
 optional = false
 python-versions = "*"
-version = "3.0.12"
 
 [[package]]
-category = "dev"
-description = "the modular source code checker: pep8, pyflakes and co"
 name = "flake8"
+version = "3.7.9"
+description = "the modular source code checker: pep8, pyflakes and co"
+category = "dev"
 optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
-version = "3.7.9"
 
 [package.dependencies]
 entrypoints = ">=0.3.0,<0.4.0"
@@ -88,279 +91,297 @@ pycodestyle = ">=2.5.0,<2.6.0"
 pyflakes = ">=2.1.0,<2.2.0"
 
 [[package]]
-category = "dev"
-description = "Read metadata from Python packages"
-marker = "python_version < \"3.8\""
 name = "importlib-metadata"
+version = "1.3.0"
+description = "Read metadata from Python packages"
+category = "dev"
 optional = false
 python-versions = "!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*,!=3.4.*,>=2.7"
-version = "1.3.0"
 
 [package.dependencies]
 zipp = ">=0.5"
 
+[package.extras]
+docs = ["sphinx", "rst.linker"]
+testing = ["packaging", "importlib-resources"]
+
 [[package]]
-category = "dev"
-description = "IPython-enabled pdb"
 name = "ipdb"
+version = "0.12.3"
+description = "IPython-enabled pdb"
+category = "dev"
 optional = false
 python-versions = ">=2.7"
-version = "0.12.3"
 
 [package.dependencies]
-setuptools = "*"
-
-[package.dependencies.ipython]
-python = ">=3.4"
-version = ">=5.1.0"
+ipython = {version = ">=5.1.0", markers = "python_version >= \"3.4\""}
 
 [[package]]
-category = "dev"
-description = "IPython: Productive Interactive Computing"
 name = "ipython"
+version = "7.10.1"
+description = "IPython: Productive Interactive Computing"
+category = "dev"
 optional = false
 python-versions = ">=3.6"
-version = "7.10.1"
 
 [package.dependencies]
-appnope = "*"
+appnope = {version = "*", markers = "sys_platform == \"darwin\""}
 backcall = "*"
-colorama = "*"
+colorama = {version = "*", markers = "sys_platform == \"win32\""}
 decorator = "*"
 jedi = ">=0.10"
-pexpect = "*"
+pexpect = {version = "*", markers = "sys_platform != \"win32\""}
 pickleshare = "*"
 prompt-toolkit = ">=2.0.0,<3.0.0 || >3.0.0,<3.0.1 || >3.0.1,<3.1.0"
 pygments = "*"
-setuptools = ">=18.5"
 traitlets = ">=4.2"
 
+[package.extras]
+all = ["pygments", "numpy (>=1.14)", "nose (>=0.10.1)", "testpath", "Sphinx (>=1.3)", "ipywidgets", "ipykernel", "notebook", "nbformat", "qtconsole", "ipyparallel", "nbconvert", "requests"]
+doc = ["Sphinx (>=1.3)"]
+kernel = ["ipykernel"]
+nbconvert = ["nbconvert"]
+nbformat = ["nbformat"]
+notebook = ["notebook", "ipywidgets"]
+parallel = ["ipyparallel"]
+qtconsole = ["qtconsole"]
+test = ["nose (>=0.10.1)", "requests", "testpath", "pygments", "nbformat", "ipykernel", "numpy (>=1.14)"]
+
 [[package]]
-category = "dev"
-description = "Vestigial utilities from IPython"
 name = "ipython-genutils"
+version = "0.2.0"
+description = "Vestigial utilities from IPython"
+category = "dev"
 optional = false
 python-versions = "*"
-version = "0.2.0"
 
 [[package]]
-category = "dev"
-description = "An autocompletion tool for Python that can be used for text editors."
 name = "jedi"
+version = "0.15.1"
+description = "An autocompletion tool for Python that can be used for text editors."
+category = "dev"
 optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
-version = "0.15.1"
 
 [package.dependencies]
 parso = ">=0.5.0"
 
+[package.extras]
+testing = ["colorama", "docopt", "pytest (>=3.1.0,<5.0.0)"]
+
 [[package]]
-category = "main"
-description = "a modern parsing library"
 name = "lark-parser"
+version = "0.7.8"
+description = "a modern parsing library"
+category = "main"
 optional = false
 python-versions = "*"
-version = "0.7.8"
 
 [[package]]
-category = "dev"
-description = "McCabe checker, plugin for flake8"
 name = "mccabe"
+version = "0.6.1"
+description = "McCabe checker, plugin for flake8"
+category = "dev"
 optional = false
 python-versions = "*"
-version = "0.6.1"
 
 [[package]]
-category = "dev"
-description = "More routines for operating on iterables, beyond itertools"
 name = "more-itertools"
+version = "8.0.2"
+description = "More routines for operating on iterables, beyond itertools"
+category = "dev"
 optional = false
 python-versions = ">=3.5"
-version = "8.0.2"
 
 [[package]]
-category = "dev"
-description = "Optional static typing for Python"
 name = "mypy"
+version = "0.750"
+description = "Optional static typing for Python"
+category = "dev"
 optional = false
 python-versions = ">=3.5"
-version = "0.750"
 
 [package.dependencies]
 mypy-extensions = ">=0.4.0,<0.5.0"
 typed-ast = ">=1.4.0,<1.5.0"
 typing-extensions = ">=3.7.4"
 
+[package.extras]
+dmypy = ["psutil (>=4.0)"]
+
 [[package]]
-category = "dev"
-description = "Experimental type system extensions for programs checked with the mypy typechecker."
 name = "mypy-extensions"
+version = "0.4.3"
+description = "Experimental type system extensions for programs checked with the mypy typechecker."
+category = "dev"
 optional = false
 python-versions = "*"
-version = "0.4.3"
 
 [[package]]
-category = "dev"
-description = "Core utilities for Python packages"
 name = "packaging"
+version = "19.2"
+description = "Core utilities for Python packages"
+category = "dev"
 optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
-version = "19.2"
 
 [package.dependencies]
 pyparsing = ">=2.0.2"
 six = "*"
 
 [[package]]
-category = "dev"
-description = "A Python Parser"
 name = "parso"
+version = "0.5.1"
+description = "A Python Parser"
+category = "dev"
 optional = false
 python-versions = "*"
-version = "0.5.1"
+
+[package.extras]
+testing = ["docopt", "pytest (>=3.0.7)"]
 
 [[package]]
-category = "dev"
-description = "Pexpect allows easy control of interactive console applications."
-marker = "python_version >= \"3.4\" and sys_platform != \"win32\" or sys_platform != \"win32\""
 name = "pexpect"
+version = "4.7.0"
+description = "Pexpect allows easy control of interactive console applications."
+category = "dev"
 optional = false
 python-versions = "*"
-version = "4.7.0"
 
 [package.dependencies]
 ptyprocess = ">=0.5"
 
 [[package]]
-category = "dev"
-description = "Tiny 'shelve'-like database with concurrency support"
 name = "pickleshare"
+version = "0.7.5"
+description = "Tiny 'shelve'-like database with concurrency support"
+category = "dev"
 optional = false
 python-versions = "*"
-version = "0.7.5"
 
 [[package]]
-category = "dev"
-description = "plugin and hook calling mechanisms for python"
 name = "pluggy"
+version = "0.13.1"
+description = "plugin and hook calling mechanisms for python"
+category = "dev"
 optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
-version = "0.13.1"
 
 [package.dependencies]
-[package.dependencies.importlib-metadata]
-python = "<3.8"
-version = ">=0.12"
+importlib-metadata = {version = ">=0.12", markers = "python_version < \"3.8\""}
+
+[package.extras]
+dev = ["pre-commit", "tox"]
 
 [[package]]
-category = "dev"
-description = "Library for building powerful interactive command lines in Python"
 name = "prompt-toolkit"
+version = "3.0.2"
+description = "Library for building powerful interactive command lines in Python"
+category = "dev"
 optional = false
 python-versions = ">=3.6"
-version = "3.0.2"
 
 [package.dependencies]
 wcwidth = "*"
 
 [[package]]
-category = "dev"
-description = "Run a subprocess in a pseudo terminal"
-marker = "python_version >= \"3.4\" and sys_platform != \"win32\" or sys_platform != \"win32\""
 name = "ptyprocess"
+version = "0.6.0"
+description = "Run a subprocess in a pseudo terminal"
+category = "dev"
 optional = false
 python-versions = "*"
-version = "0.6.0"
 
 [[package]]
-category = "dev"
-description = "library with cross-python path, ini-parsing, io, code, log facilities"
 name = "py"
+version = "1.8.0"
+description = "library with cross-python path, ini-parsing, io, code, log facilities"
+category = "dev"
 optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
-version = "1.8.0"
 
 [[package]]
-category = "dev"
-description = "Python style guide checker"
 name = "pycodestyle"
+version = "2.5.0"
+description = "Python style guide checker"
+category = "dev"
 optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
-version = "2.5.0"
 
 [[package]]
-category = "dev"
-description = "passive checker of Python programs"
 name = "pyflakes"
+version = "2.1.1"
+description = "passive checker of Python programs"
+category = "dev"
 optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
-version = "2.1.1"
 
 [[package]]
-category = "dev"
-description = "Pygments is a syntax highlighting package written in Python."
 name = "pygments"
+version = "2.7.4"
+description = "Pygments is a syntax highlighting package written in Python."
+category = "dev"
 optional = false
-python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
-version = "2.5.2"
+python-versions = ">=3.5"
 
 [[package]]
-category = "dev"
-description = "Python parsing module"
 name = "pyparsing"
+version = "2.4.5"
+description = "Python parsing module"
+category = "dev"
 optional = false
 python-versions = ">=2.6, !=3.0.*, !=3.1.*, !=3.2.*"
-version = "2.4.5"
 
 [[package]]
-category = "dev"
-description = "pytest: simple powerful testing with Python"
 name = "pytest"
+version = "5.3.1"
+description = "pytest: simple powerful testing with Python"
+category = "dev"
 optional = false
 python-versions = ">=3.5"
-version = "5.3.1"
 
 [package.dependencies]
-atomicwrites = ">=1.0"
+atomicwrites = {version = ">=1.0", markers = "sys_platform == \"win32\""}
 attrs = ">=17.4.0"
-colorama = "*"
+colorama = {version = "*", markers = "sys_platform == \"win32\""}
+importlib-metadata = {version = ">=0.12", markers = "python_version < \"3.8\""}
 more-itertools = ">=4.0.0"
 packaging = "*"
 pluggy = ">=0.12,<1.0"
 py = ">=1.5.0"
 wcwidth = "*"
 
-[package.dependencies.importlib-metadata]
-python = "<3.8"
-version = ">=0.12"
+[package.extras]
+testing = ["argcomplete", "hypothesis (>=3.56)", "mock", "nose", "requests", "xmlschema"]
 
 [[package]]
-category = "dev"
-description = "Python 2 and 3 compatibility utilities"
 name = "six"
+version = "1.13.0"
+description = "Python 2 and 3 compatibility utilities"
+category = "dev"
 optional = false
 python-versions = ">=2.6, !=3.0.*, !=3.1.*"
-version = "1.13.0"
 
 [[package]]
-category = "dev"
-description = "Python Library for Tom's Obvious, Minimal Language"
 name = "toml"
+version = "0.10.0"
+description = "Python Library for Tom's Obvious, Minimal Language"
+category = "dev"
 optional = false
 python-versions = "*"
-version = "0.10.0"
 
 [[package]]
-category = "dev"
-description = "tox is a generic virtualenv management and test command line tool"
 name = "tox"
+version = "3.14.2"
+description = "tox is a generic virtualenv management and test command line tool"
+category = "dev"
 optional = false
 python-versions = "!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*,!=3.4.*,>=2.7"
-version = "3.14.2"
 
 [package.dependencies]
-colorama = ">=0.4.1"
+colorama = {version = ">=0.4.1", markers = "platform_system == \"Windows\""}
 filelock = ">=3.0.0,<4"
+importlib-metadata = {version = ">=1.1.0,<2", markers = "python_version < \"3.8\""}
 packaging = ">=14"
 pluggy = ">=0.12.0,<1"
 py = ">=1.4.17,<2"
@@ -368,111 +389,278 @@ six = ">=1.0.0,<2"
 toml = ">=0.9.4"
 virtualenv = ">=16.0.0"
 
-[package.dependencies.importlib-metadata]
-python = "<3.8"
-version = ">=1.1.0,<2"
+[package.extras]
+docs = ["sphinx (>=2.0.0,<3)", "towncrier (>=18.5.0)", "pygments-github-lexers (>=0.0.5)", "sphinxcontrib-autoprogram (>=0.1.5)"]
+testing = ["freezegun (>=0.3.11,<1)", "pathlib2 (>=2.3.3,<3)", "pytest (>=4.0.0,<6)", "pytest-cov (>=2.5.1,<3)", "pytest-mock (>=1.10.0,<2)", "pytest-xdist (>=1.22.2,<2)", "pytest-randomly (>=1.0.0,<4)", "flaky (>=3.4.0,<4)", "psutil (>=5.6.1,<6)"]
 
 [[package]]
-category = "dev"
-description = "Traitlets Python config system"
 name = "traitlets"
+version = "4.3.3"
+description = "Traitlets Python config system"
+category = "dev"
 optional = false
 python-versions = "*"
-version = "4.3.3"
 
 [package.dependencies]
 decorator = "*"
 ipython-genutils = "*"
 six = "*"
 
+[package.extras]
+test = ["pytest", "mock"]
+
 [[package]]
-category = "dev"
-description = "a fork of Python 2 and 3 ast modules with type comment support"
 name = "typed-ast"
+version = "1.4.0"
+description = "a fork of Python 2 and 3 ast modules with type comment support"
+category = "dev"
 optional = false
 python-versions = "*"
-version = "1.4.0"
 
 [[package]]
-category = "dev"
-description = "Backported and Experimental Type Hints for Python 3.5+"
 name = "typing-extensions"
+version = "3.7.4.1"
+description = "Backported and Experimental Type Hints for Python 3.5+"
+category = "dev"
 optional = false
 python-versions = "*"
-version = "3.7.4.1"
 
 [[package]]
-category = "dev"
-description = "Virtual Python Environment builder"
 name = "virtualenv"
+version = "16.7.8"
+description = "Virtual Python Environment builder"
+category = "dev"
 optional = false
 python-versions = "!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*,>=2.7"
-version = "16.7.8"
+
+[package.extras]
+docs = ["sphinx (>=1.8.0,<2)", "towncrier (>=18.5.0)", "sphinx-rtd-theme (>=0.4.2,<1)"]
+testing = ["pytest (>=4.0.0,<5)", "coverage (>=4.5.0,<5)", "pytest-timeout (>=1.3.0,<2)", "six (>=1.10.0,<2)", "pytest-xdist", "pytest-localserver", "pypiserver", "mock", "xonsh"]
 
 [[package]]
-category = "dev"
-description = "Measures number of Terminal column cells of wide-character codes"
 name = "wcwidth"
+version = "0.1.7"
+description = "Measures number of Terminal column cells of wide-character codes"
+category = "dev"
 optional = false
 python-versions = "*"
-version = "0.1.7"
 
 [[package]]
-category = "dev"
-description = "Backport of pathlib-compatible object wrapper for zip files"
-marker = "python_version < \"3.8\""
 name = "zipp"
+version = "0.6.0"
+description = "Backport of pathlib-compatible object wrapper for zip files"
+category = "dev"
 optional = false
 python-versions = ">=2.7"
-version = "0.6.0"
 
 [package.dependencies]
 more-itertools = "*"
 
+[package.extras]
+docs = ["sphinx", "jaraco.packaging (>=3.2)", "rst.linker (>=1.9)"]
+testing = ["pathlib2", "contextlib2", "unittest2"]
+
 [metadata]
-content-hash = "96f699f13e1ddcf6dd9b375f7b051af4983cb3be0ce694e7d0fe9e98adcf85d2"
+lock-version = "1.1"
 python-versions = "^3.7"
+content-hash = "96f699f13e1ddcf6dd9b375f7b051af4983cb3be0ce694e7d0fe9e98adcf85d2"
 
-[metadata.hashes]
-appnope = ["5b26757dc6f79a3b7dc9fab95359328d5747fcb2409d331ea66d0272b90ab2a0", "8b995ffe925347a2138d7ac0fe77155e4311a0ea6d6da4f5128fe4b3cbe5ed71"]
-atomicwrites = ["03472c30eb2c5d1ba9227e4c2ca66ab8287fbfbbda3888aa93dc2e28fc6811b4", "75a9445bac02d8d058d5e1fe689654ba5a6556a1dfd8ce6ec55a0ed79866cfa6"]
-attrs = ["08a96c641c3a74e44eb59afb61a24f2cb9f4d7188748e76ba4bb5edfa3cb7d1c", "f7b7ce16570fe9965acd6d30101a28f62fb4a7f9e926b3bbc9b61f8b04247e72"]
-backcall = ["38ecd85be2c1e78f77fd91700c76e14667dc21e2713b63876c0eb901196e01e4", "bbbf4b1e5cd2bdb08f915895b51081c041bac22394fdfcfdfbe9f14b77c08bf2"]
-colorama = ["7d73d2a99753107a36ac6b455ee49046802e59d9d076ef8e47b61499fa29afff", "e96da0d330793e2cb9485e9ddfd918d456036c7149416295932478192f4436a1"]
-darglint = ["2fe546c4b5d60f523dae4e9f975542c5b1b42838b22e8be64254684e361b0a5f", "8511f7e403e4512e6901d067b2a82b66c09f9497651b728023eeb4564bf8c0c1"]
-decorator = ["54c38050039232e1db4ad7375cfce6748d7b41c29e95a081c8a6d2c30364a2ce", "5d19b92a3c8f7f101c8dd86afd86b0f061a8ce4540ab8cd401fa2542756bce6d"]
-entrypoints = ["589f874b313739ad35be6e0cd7efde2a4e9b6fea91edcc34e58ecbb8dbe56d19", "c70dd71abe5a8c85e55e12c19bd91ccfeec11a6e99044204511f9ed547d48451"]
-filelock = ["18d82244ee114f543149c66a6e0c14e9c4f8a1044b5cdaadd0f82159d6a6ff59", "929b7d63ec5b7d6b71b0fa5ac14e030b3f70b75747cef1b10da9b879fef15836"]
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