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.

['5545', '7973', 'M', 'y', '8231', 'D', '7831', '91', '5517', 'd', 'E', 'Y', 'S', 'c', '8775', '4131', '1279', 'b', 'M']
5545, 7973, 13, 25, 8231, 4, 7831, 91, 5517, 4, 5, 25, 19, 3, 8775, 4131, 1279, 2, 13

['8623', '1535', '2699', 'e', '1463', '279']
8623, 1535, 2699, 5, 1463, 279

['5529', '2185', '9907', 'V', '3783', 'd', '893', '8825', 'E', 's', 'E', '1463', '175', 'j', '6371', '1925', 't', 'K', '325', 'm', 'C', '3775', '9975', '1547', '5699', 'J', '9929', 'q', '7521', '7021', 'c', '7963', 'Y', '5095', '3713', '1107']

5529, 2185, 9907, 22, 3783, 4, 893, 8825, 5, 19, 5, 1463, 175, 10, 6371, 1925, 20, 11, 325, 13, 3, 3775, 9975, 1547, 5699, 10, 9929, 17, 7521, 7021, 3, 7963, 25, 5095, 3713, 1107