Question: A block in a binary string is a substring in which all sym- bols are the same and which cannot be enlarged. For example, 00111000

A block in a binary string is a substring in which all sym- bols are the same and which cannot be enlarged. For example, 00111000 has three blocks: 00, 111, and 000. Let L be the set of all those binary strings in which every block is of length 2 or length 3. Give both a DFA and a regular expression for L.

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