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: ['j', '1323', 'I', 'v', '3475', 'v', 'V', '6815', 'r', 'f', 't', 'z', '4341', 't', '517', 'a', '8585', 'x', 'A', 'J', 'P', '4935', '3433', 'T', 'B', '4631', '7959']

10, 1323, 9, 22, 3475, 22, 22, 6815, 18, 6, 20, 26, 4341, 20, 517, 1, 8585, 24, 1, 10, 16, 4935, 3433, 20, 2, 4631, 7959