Question: ( 2 0 points ) Let the alphabet ? ? = { a , b } , and let and B are CFGs , and

(20 points) Let the alphabet ??={a,b}, and let and B are CFGs, and for any string w of lengh =5, w appears in both L(A) and L(B). Show that L is Turing decidable.
( 2 0 points ) Let the alphabet ? ? = { a , b } ,

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