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Substrings that match regex


write all substrings of a2bbc1cc2bb12b2c
regex is a.*[12]
Then do I need to write all six substrings : a2, a2bbc1, a2bbc1cc2, a2bbc1cc2bb1, a2bbc1cc2bb12, a2bbc1cc2bb12b2?


That is correct. All 6 are substrings of the original string that match the regular expression.