Question: For strings r , s , v , w with r s and v w , prove or disprove ( Prove = explain in a

For strings r,s,v,w with r s and v w, prove or disprove (Prove = explain in a few words why
it is true; Disprove = give a counterexample). Use shortlex order.
a. rv sw
b. vR w R
c. w R vR
d. For any string x in Prefix(v), x = v
For strings r,s,v,w with r s and v w, prove or

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