torial) a's in between. For example, bab baab, bab, am to bantb, n> O). That is, w starts and ends with b, with n (n ct o example, bab baab, basb, and ba?4b are all elements of Lu a, bb, and bbab are not elements of L. Use the CF Pumping that the pumping length K is greater than or equa Theorem to show that L CFLs. Note l to 1