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', 'S', '2727', 's', 'L', 'W', '4447', '8373', 'k', 'V', '8613', '1291', 'i', 'g', 'n', 'y', '4731', '2289', '7797', '7041', 'U', '2731', '4443', '7047', '9861', '5637', '7675', 'K', '4849', 'A', '3435', '8129', '6881', '9969', 'g', '1931']

13, 19, 2727, 19, 12, 23, 4447, 8373, 11, 22, 8613, 1291, 9, 7, 14, 25, 4731, 2289, 7797, 7041, 21, 2731, 4443, 7047, 9861, 5637, 7675, 11, 4849, 1, 3435, 8129, 6881, 9969, 7, 1931