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: ['Q', 'U', 'm', '2043', 'K', 'v', 'T', 'D', 'A', 'm', 's', '9981', '2109', '3251', '9023', 'w', 'p', 'i', 'c', '1265', '4185', '8595', 'u', 'Z', '9011', '4975', '739', '4603']

17, 21, 13, 2043, 11, 22, 20, 4, 1, 13, 19, 9981, 2109, 3251, 9023, 23, 16, 9, 3, 1265, 4185, 8595, 21, 26, 9011, 4975, 739, 4603