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.

['9003', 'i', '881', 'l', 'f', '2663', '1619', 'Y', 'E', 'W', '2869', 'k', 'v', 'c', '9423', 'S', 'G', 'C', 's', '4311', '531', '9789', '937', 'F']
9003, 9, 881, 12, 6, 2663, 1619, 25, 5, 23, 2869, 11, 22, 3, 9423, 19, 7, 3, 19, 4311, 531, 9789, 937, 6

['o', '8137', 'V', 'q', '2543']
15, 8137, 22, 17, 2543

['4809', '1779', 'V', '6907', '19', 'p', '6957', '9935', 'P', 'K', '8645', '9853', '7089', '1169', '61', 's', 'D', 'y']

4809, 1779, 22, 6907, 19, 16, 6957, 9935, 16, 11, 8645, 9853, 7089, 1169, 61, 19, 4, 25