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: ['3883', '6329', 'Q', 'i', 'e', '4355', 'V', 'A', '2389', 'i', '8687', '3225', '5137', 'i', 'n', '9387', '5125', 'S', '3213', '1521', 'T']

3883, 6329, 17, 9, 5, 4355, 22, 1, 2389, 9, 8687, 3225, 5137, 9, 14, 9387, 5125, 19, 3213, 1521, 20