u g y h j
N for november. The sequence starts with march.
SEOCNODEJAFE SE---September OC---October NO---November DE---December JA---January FE---February The next sequence will be FE for February.
s o.
n for November
k
d
k comes next, and then l.
T
It's K!
T
I think it's M.B is the second letter, C is the third, D is the 4th. The difference between these letters is one. D-G is 3 and G-J is 3 so I'd assume that the next letter is the third after J which is M.2-3-4-7-10-13
I
Check out the link for the sequence.
D
J
u g y h j