Given an Alphabet A1 which base is A2 which base is Encoding1, A1 -> A2 -> E1 Calling Lexer with a base [A2, A3](a join Alphabet of A2 and A3) will fail ## <bountysource-plugin> --- Want to back this issue? **[Post a bounty on it!](https://www.bountysource.com/issues/1410379-generallexer-doesn-t-work-when-the-base-alphabet-is-not-reachable?utm_campaign=plugin&utm_content=tracker%2F129089&utm_medium=issues&utm_source=github)** We accept bounties via [Bountysource](https://www.bountysource.com/?utm_campaign=plugin&utm_content=tracker%2F129089&utm_medium=issues&utm_source=github). </bountysource-plugin>
Given an Alphabet A1 which base is A2 which base is Encoding1,
A1 -> A2 -> E1
Calling Lexer with a base [A2, A3](a join Alphabet of A2 and A3) will fail
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