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: ['X', 'i', '9923', '6865', '1431', 'i', 'T', '1369', 'w', '9703', '9929', 'O', '215', 'I', '7625', 'M', '8383', '5899', '5767', 'D', 'Z', '6665', '1959', '7385', '5359', 'S', '559', '1491', 'M']

24, 9, 9923, 6865, 1431, 9, 20, 1369, 23, 9703, 9929, 15, 215, 9, 7625, 13, 8383, 5899, 5767, 4, 26, 6665, 1959, 7385, 5359, 19, 559, 1491, 13