Definition: In this task, you are given an input list A. You need to convert all the alphabets in the list with a number representing their position in the English alphabet. E.g., replace A by 1, B by 2, a by 1, b by 2, and so on.
Input: ['69', '8881', 'b', 'v', '9909', 'c', 'N', '1329']

69, 8881, 2, 22, 9909, 3, 14, 1329