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: ['m', '8825', 'z', '6535', '8131', 'V', '7993', '3889', 'Z', 'm', 'I', 'f', '5791', 'O', '2691', '3263', '233', 'z', '2449', '377', '9121', 'A', 'd']

13, 8825, 26, 6535, 8131, 22, 7993, 3889, 26, 13, 9, 6, 5791, 15, 2691, 3263, 233, 26, 2449, 377, 9121, 1, 4