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: ['h', '1053', '483', '893', '4597', 'y', '4525', '1965', '8741', '6469', 'U', '1101', '5699', '7733', '4319', '6441', '3205', 'g', 'X', 'c', 'E', '2899', 'N', 'n', '7917', 'I', '429']

8, 1053, 483, 893, 4597, 25, 4525, 1965, 8741, 6469, 21, 1101, 5699, 7733, 4319, 6441, 3205, 7, 24, 3, 5, 2899, 14, 14, 7917, 9, 429