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: ['g', 'm', 'U', 'A', '4059', '9551', '8201', '3595', 'Q', '8029', '1359', 'I', 'i', 'f', '1513', '5545', '8229', '6999', '9611', '9753', '6597', '5379', 'w', '815', 'b']

7, 13, 21, 1, 4059, 9551, 8201, 3595, 17, 8029, 1359, 9, 9, 6, 1513, 5545, 8229, 6999, 9611, 9753, 6597, 5379, 23, 815, 2