What is the missing letter in sequence a b d g k v c k t?

The sequence appears to follow a pattern based on the position of letters in the alphabet, where each letter is related to the previous one by a certain number of steps. The missing letter in the sequence is "e," which fits between "d" and "g" when following the numeric pattern (1, 2, 3, 4, etc.). Thus, the complete sequence, with the missing letter included, is a, b, e, d, g, k, v, c, k, t.