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: ['v', 'b', 'J', '3481', 'D', 'H', 'W', '3227', '7605', '5005', '6905', 'u', 'f', '2633', '3043', '3983', 'p', 'A', 'Z', 'v', '9563', '5687', '7827', '9863', '5467', '9611', '1687', '2531']

22, 2, 10, 3481, 4, 8, 23, 3227, 7605, 5005, 6905, 21, 6, 2633, 3043, 3983, 16, 1, 26, 22, 9563, 5687, 7827, 9863, 5467, 9611, 1687, 2531