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: ['r', '1325', '4701', '267', '727', 'P', '4983', 'p', 'K', 'F', '7941', 'L', '3643', '7121', '663', 'g', 'P', '3499', 'U', '1495', '7853', 'k', 'X', '9405', 'O', 'R', 'B', 'i', '4127', '1859', '7987', '4541', 'G', 'o', 'M', '3595', 'W']

18, 1325, 4701, 267, 727, 16, 4983, 16, 11, 6, 7941, 12, 3643, 7121, 663, 7, 16, 3499, 21, 1495, 7853, 11, 24, 9405, 15, 18, 2, 9, 4127, 1859, 7987, 4541, 7, 15, 13, 3595, 23