5.
ZZ, AA, YY, BB, XX, CC, WW ?
7.
M, N, N, M, O, L, P ?, ?
8.
?, ?, N, M, O, L, P, K, Q
9.
N, M, M, N, L, O, ?, ?
10.
ABCD, EFGH, JKLM, PQRS, ?
12.
BEE, GEE, LEE, QEE, ?
22.
A, Z, B, Y, D, W, G, T, ?, ?
23.
A,AB, ABD, ABDG, aBDGK, ??????
26.
O, J, T, F, T, M, F, A, F, M< S, J, S, J, ?, ?
27.
M M N M N O M N O P M N O P Q M N O P Q ?
28.
MHZ, NIW, OKT, PNQ, ?