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: ['j', 'I', '3247', 'M', '9181', '3459', 'g', 'd', 'X', '8441', '6991', '4257', '6523', '9347', '3905', 'z', 'y', 'Z', 'Y', 's', 'm', '4521', '8055', 'G', 'z', '1817']

10, 9, 3247, 13, 9181, 3459, 7, 4, 24, 8441, 6991, 4257, 6523, 9347, 3905, 26, 25, 26, 25, 19, 13, 4521, 8055, 7, 26, 1817