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: ['3485', 'G', 'y', 'Q', 'w', 'x', 'x', '8895', '2981', 'I', '255', '9953', '9695', '4467', 'B', '6537', 's', 'C', 'w', 'e', 'w', 'S', '7951', '3945', '8127', 'O', '5951', 'C', '2965', '5863', 'u', 'x', '205', 'H', 'u']

3485, 7, 25, 17, 23, 24, 24, 8895, 2981, 9, 255, 9953, 9695, 4467, 2, 6537, 19, 3, 23, 5, 23, 19, 7951, 3945, 8127, 15, 5951, 3, 2965, 5863, 21, 24, 205, 8, 21