C
The letter o, Q, Q,m, b, c, C, u,U, and there might be more.
jeanoc
Jocund
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 1 words with the pattern J-C-B-O-. That is, eight letter words with 1st letter J and 3rd letter C and 5th letter B and 7th letter O. In alphabetical order, they are: jackboot
cajole
Those letters will spell the seven letter word boombox.
The next letter is U A -> miss a letter (B) -> C C -> miss two letters (DE) -> F F -> miss three letters (GHI) -> J J -> miss four letters (KLMN) -> O and so on....
decay, decoy
a b c d e f g h i j k l m n OOOOOOOOOOOOOOO a b c d e f g h i j k l m n OOOOOOOOOOOOOOO
J. B. O. Sneeden has written: 'Introduction to internal combustion'
_g__b_l_