Say I have a regular expression like: 
A[CT]A[CT]

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This can match 4 possible strings ACAC, ACAT, ATAC, ATAT, For any given regular expression I would like a script that lists all possible strings it could match. Such a script would have utility in "back translating" amino acids to proteins, or DNA sequences with SNPs to possible exact sequences. I do not see an easy way to accomplish this, and have to think the problem has been solved 100's of times. Thanks in advance for help

In reply to back translating regular expressions by anthonywatson

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