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Let = {0, 1}. Write CFGs that generate the following languages:

Let  = {0, 1}. Write CFGs that generate the following languages:
 {W | W contains no more than three 1’s}
 {W | W starts and ends with different symbols}
 {W | W starts with a 1 and has an even length}
 {W | The length of w is even and its middle two symbols are 01}
 {W | W contains twice the number of 0’s than 1’s}
 {W | W = 000W^(R)111, where W^R is the reverse of W}
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LanguageToCFG.docx

{W | W contains no more than three 1’s}
S->1A|ε
A->1B|11B|B1|B11|ε
B->0B|B0|0
{W | W starts and ends with different symbols}
S->0A|A0|1B|B1
A->1A|ε
B->0B|ε
{W | W starts...

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