Series one..........

OK moonbuds/buddettes this question is a series of series. Your job is to say what would come next........and why!!!

1) WA, P, A, ?

2) SFAJT, F, MC, ?

3) FGTR, T, NC, F, ?

4) KE, OT, A, FM, MM, RLJ, N, R, G, HATN, TTLB, ?

5) V, K, RAR, M, ?

Hopefully that might keep you occupied for a couple of minutes.........

Please don't post until you have ALL FIVE. The winner is the one who gets all five first.