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: ['M', 'd', 'o', '6461', 'W', '3557', '9945', 's', '7045', 'D', 'R', 'f', 'M', '9945', 'y', '8177', 'Z', '3411', 'w', 'o', '3641', 'Y', 'l', 's']

13, 4, 15, 6461, 23, 3557, 9945, 19, 7045, 4, 18, 6, 13, 9945, 25, 8177, 26, 3411, 23, 15, 3641, 25, 12, 19