Are you a word nerd? Please help!?

Question

I want to solve these sequences and failures. For example: M,T,W,T,F,S,S = days of the week. Any help would be appreciated. The rest are as follows:

1. T,T,L,S

2. The F,S,S and the F,G

3. T, is T, C, of F

4. O,T,T,F,F,S,S,E,N,T

Answer 1

1: twinkle twinkle little star

4: one, two three four five six seven eight nine ten

I'm still looking for the other 2