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: ['7011', '7341', 'q', 'I', '4651', '1939', '7861', '673', '8339', '3661', 'V', 'a', '3251', 'E', 's', 'B', '4269']

7011, 7341, 17, 9, 4651, 1939, 7861, 673, 8339, 3661, 22, 1, 3251, 5, 19, 2, 4269