. Are the languages L1 and L2 below over the alphabet = {a, b, c} regular or non-regular? Justify your answer carefully.

(a) L1 = {a 2i+1 b j : i, j 0} {a k b 2n+1 c 3p : k, n, p 0}

(b) L2 = {a i b j+2 c 2i : i, j 0}

3. Are the languages L, and L2 below over the alphabet I = {a,b,c} regular or non-regular? Justify your answer carefully. (a) L1 = {a2i+lbi : i, j >0} n {akb2n +1c3p : k,n, p > 0} (b) L2 = {a' bi+2,2i : i, j >0}