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: ['i', 'w', '8547', '7931', 'T', '2787', 'u', 'i', 'g', '5255', 'n', '2153', 'K', '1295', '6761', 'U', 'h', 'z', '3559', '8471', '2627', 'L', '1663', 'v', '5663', '1249', 'g', 'J', 'W', 'v', '8363']

9, 23, 8547, 7931, 20, 2787, 21, 9, 7, 5255, 14, 2153, 11, 1295, 6761, 21, 8, 26, 3559, 8471, 2627, 12, 1663, 22, 5663, 1249, 7, 10, 23, 22, 8363