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: ['3671', 'Q', '1017', 'T', '3813', '3181', 'M', '1213', 'I', '649', '1983', 'Q', 'P', 'l', '4463', '9319', '3067', '3553', '3135', '1657', 'x', 'z', 'E', '7145']

3671, 17, 1017, 20, 3813, 3181, 13, 1213, 9, 649, 1983, 17, 16, 12, 4463, 9319, 3067, 3553, 3135, 1657, 24, 26, 5, 7145