Here's a batch of letter sequence puzzles for you. The goal is simple: Figure out which letters go in the blanks. Try it out for yourself and see what you can get.
Puzzle #1 K, H, D, M, D, _, _ (Solved By Bailey M)
Puzzle #2: A, B, E, F, G, H, I, J, N, P, _
Puzzle #3: I, E, H, O, I, I, E, I, I, E, _, _ (Solved By Joe Z.)
Puzzle #4: O, U, E, H, R, _, _ (Solved By Joe Z.)
The puzzles are in order from easiest to hardest.