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: ['k', '8563', 'Z', '4041', 'p', 'x', '8569', '1099', '7541', 'V', 'm', '1493', 'w', '2491', '3909', '701', '9869', 'a', '8683', '1631', '9621', '7665', 'S']

11, 8563, 26, 4041, 16, 24, 8569, 1099, 7541, 22, 13, 1493, 23, 2491, 3909, 701, 9869, 1, 8683, 1631, 9621, 7665, 19