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: ['1089', '6215', '7109', '6301', '1437', '3401', 'x', 'O', '2173', '6735', 'c', '3263', 'I', '171', '979', '8019', '4045', '1365', '9641', '3259', '7509', 'W']

1089, 6215, 7109, 6301, 1437, 3401, 24, 15, 2173, 6735, 3, 3263, 9, 171, 979, 8019, 4045, 1365, 9641, 3259, 7509, 23