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: ['8867', '1281', '1229', 'b', '1443', 'T', 'C', '3433', '4693', 'z', '1283', '2533', 'D', '7583', 'K', '9053', 'W', 'F', 'L', 'L', 'i']

8867, 1281, 1229, 2, 1443, 20, 3, 3433, 4693, 26, 1283, 2533, 4, 7583, 11, 9053, 23, 6, 12, 12, 9