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: ['x', 'G', '3863', '4009', '2413', 'U', 'F', 'l', 'I', '7825', 'J', '6709', '3691', '231', 'G', '8895', '3003', '7901', '3003', '6743', 'f', '7801', '699', 'i', 'b', '4791']

24, 7, 3863, 4009, 2413, 21, 6, 12, 9, 7825, 10, 6709, 3691, 231, 7, 8895, 3003, 7901, 3003, 6743, 6, 7801, 699, 9, 2, 4791