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: ['8217', '5723', 'o', 'M', 'P', 'w', 'H', '233', '7417', '3223', '1185', 'W', '9875', '6363', 'y']

8217, 5723, 15, 13, 16, 23, 8, 233, 7417, 3223, 1185, 23, 9875, 6363, 25