what is the next letter e h l q
I'm gonna go with W. I think the pattern is that the gap between letters will increase by 1 each time. E fg H ijk L mnop Q rstuv W
X
S
c
Q
The next (and last) letter is C. Just as a countdown counts backwards, this series is "countdown" spelled backwards.
c is next
y
S
T
It's the letter D of course! Haven't you heard of Jason D?!
R