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', 'w', 't', 'j', '4829', 'w', '8735', 'Q', 'f', 's', 'F', '7507', '2387', '739', 'j', '7373', 'R', '5277', '7929', '2381', '5523', 'B', 'o', '9147', '2505', '909', '7099', '1163', 'M', 'C', 'y', '8717', 'i', 'l']

11, 23, 20, 10, 4829, 23, 8735, 17, 6, 19, 6, 7507, 2387, 739, 10, 7373, 18, 5277, 7929, 2381, 5523, 2, 15, 9147, 2505, 909, 7099, 1163, 13, 3, 25, 8717, 9, 12