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: ['9943', 'n', '7785', 'I', 'f', '5033', 'l', 'N', 'N', 'c', '2743', '4119', '9089', '8909', 'x', 'X', '7853', '3787', 'i', 'b', '9159', '4037', '2309', 'F']

9943, 14, 7785, 9, 6, 5033, 12, 14, 14, 3, 2743, 4119, 9089, 8909, 24, 24, 7853, 3787, 9, 2, 9159, 4037, 2309, 6