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: ['w', 'w', '5257', 'v', 'l', 'n', '8261', 'w', '3103', '7575', '1777', '3217', 'l', 'V', 'j', 'b', 'I', '387', '3285', '6363', 'n', 'D', 'E', '9715', 'j', '7355', 'H', '6601', '135', '7137', '8411', '2535', 'a', '509', '4513', 'n']

23, 23, 5257, 22, 12, 14, 8261, 23, 3103, 7575, 1777, 3217, 12, 22, 10, 2, 9, 387, 3285, 6363, 14, 4, 5, 9715, 10, 7355, 8, 6601, 135, 7137, 8411, 2535, 1, 509, 4513, 14