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: ['b', '2649', 'E', '6125', '1149', '3177', '4145', '1423', 'X', '5587', '1193', '5281', '811', 'i', '7273', '3779', 'y', '1865', 'V', 'd', '5557', '7901', '7593', '9671', '2415', 's', '8547', 't', '1495']

2, 2649, 5, 6125, 1149, 3177, 4145, 1423, 24, 5587, 1193, 5281, 811, 9, 7273, 3779, 25, 1865, 22, 4, 5557, 7901, 7593, 9671, 2415, 19, 8547, 20, 1495