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: ['4607', '9431', '1735', 'G', '5353', 'N', '8363', '8277', 'r', '5327', 'j', 'Z', '963', '4469', '1843', '6049', 'A', '1319', '2429', 'o', '3529', '5701', '2131', 'd', '2195', '8609', 'Y', '855', '6335', '301', 'k', '2981', '3605', 'L', '3219', '7039', '9487', '8343', 'T']

4607, 9431, 1735, 7, 5353, 14, 8363, 8277, 18, 5327, 10, 26, 963, 4469, 1843, 6049, 1, 1319, 2429, 15, 3529, 5701, 2131, 4, 2195, 8609, 25, 855, 6335, 301, 11, 2981, 3605, 12, 3219, 7039, 9487, 8343, 20