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: ['4733', 'l', '773', 'O', '9883', '91', '1751', '1095', '4527', '7521', 'P', '5013', '3899', 'I', 'Z', 'J', '6123', '7187', 'F', '3483', '4599', '8847', 'N', '5315', '3631', '4709', 's', 'v', '8705', '7073', '9587', 'd', 'H', '6581']

4733, 12, 773, 15, 9883, 91, 1751, 1095, 4527, 7521, 16, 5013, 3899, 9, 26, 10, 6123, 7187, 6, 3483, 4599, 8847, 14, 5315, 3631, 4709, 19, 22, 8705, 7073, 9587, 4, 8, 6581