Supported grammars

  • r = (s)
  • r = st
  • r = s|t
  • r = s*
  • r = s+
  • r = s?
  • r = ϵ

Examples

  • (a|b)*
  • (a*|b*)*
  • ((ϵ|a)b*)*
  • (a|b)*abb(a|b)*
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