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: ['5703', 'J', '6959', 't', '7747', '5383', '1425', '5879', 'W', '7037', '7175', 'S', '2525', 'O', 'f', '9147', 'j', '5875', 'Q', 'P', '1943', 'w', '1179', '3473', 'e', 'p', 'E', 'r', 'o', '8417', '6195']

5703, 10, 6959, 20, 7747, 5383, 1425, 5879, 23, 7037, 7175, 19, 2525, 15, 6, 9147, 10, 5875, 17, 16, 1943, 23, 1179, 3473, 5, 16, 5, 18, 15, 8417, 6195