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: ['A', 'K', '8557', '6981', '6607', 'T', '2855', 'w', '3221', 'z', '4847', 'b', 'E', '4627', '9261', '1153', '9833', 'h', '8421', 'f', 'O', '8861', '5755', 'i', '7325', 'E', '2327', 'P']

1, 11, 8557, 6981, 6607, 20, 2855, 23, 3221, 26, 4847, 2, 5, 4627, 9261, 1153, 9833, 8, 8421, 6, 15, 8861, 5755, 9, 7325, 5, 2327, 16