Please help me with the question 1 and 2. Thank you very much.

1. Construct NPDA's that accept the following languages (a) L(r) where r = abb* aba* (b) L = {a"62": n >0} = 2. Given NPDA M = (Q, 2, 1,8,90,2, F) where Q = {90,91,92}, } = {a,b}, I = {0, 1, 2}, F = {9}, and the transition function 8 is given by 8(90, 0, 2) {(91,0), (92, 1)}, 8(91,6,0) = {(91,1)}, 8(91,6,1) {(91,1)}, 8(q, a, 1) {(92, 1)} Find the language L(M) that accepted by M. = 3. Construct an NPDA corresponding to the gram- mar S aABB|AA, aBBja, B bBBA