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: ['V', '3471', '1007', '1937', 'Y', '3529', 'M', '9079', '129', 'j', '3991', 'X', 'h', '3647', 'C', 'l', 'Z', 'E', '6169', '4729']

22, 3471, 1007, 1937, 25, 3529, 13, 9079, 129, 10, 3991, 24, 8, 3647, 3, 12, 26, 5, 6169, 4729