Question: 11. Find grammars for E (a, b) that generate the sets of rs for -{a,b) that generate the sets of 2 (a) all strings with

11. Find grammars for E (a, b) that generate the sets of rs for -{a,b) that generate the sets of 2 (a) all strings with exactly one a. (b) all strings with at least one a. (c) all strings with no more than three a's. (d) all strings with at least three a's

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