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: ['o', '2271', '4569', '3823', 'z', '7435', '5985', 'I', '9193', '2991', 'v', 'f', 'I', 'd', '7175', '1985', 'u', '1133', 'C', '787', '35', '1365', 'B', '5717', '6581', '9349', 'g', 'l', 't', '4131', 'n', '7765', 'y', '797', '2351', 't', 'b', 'j']

15, 2271, 4569, 3823, 26, 7435, 5985, 9, 9193, 2991, 22, 6, 9, 4, 7175, 1985, 21, 1133, 3, 787, 35, 1365, 2, 5717, 6581, 9349, 7, 12, 20, 4131, 14, 7765, 25, 797, 2351, 20, 2, 10