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', 'm', '1241', 't', '2145', 'A', '7283', '4445', '2719', 'L', '8229', '7241', '1307', '1739', 'd', 'v', 'z', '973', 'i', 'r', '2809', '3319', 'F', 'V', 'e', '659', '169', '8869', '4405', '9113', '4519', 'K']

13, 13, 1241, 20, 2145, 1, 7283, 4445, 2719, 12, 8229, 7241, 1307, 1739, 4, 22, 26, 973, 9, 18, 2809, 3319, 6, 22, 5, 659, 169, 8869, 4405, 9113, 4519, 11