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: ['6263', '6487', '8031', '897', '3801', '4505', '5867', '4699', '5819', '7735', '5455', '3115', 'a', 'v', '3895', 'h', '9489', 'i', '909', 'n', 'N', 'm', '2953', '3455', '8401', 'z', 'b', 'F', '5697', 'j', '8889', '397', 'j', '3253']

6263, 6487, 8031, 897, 3801, 4505, 5867, 4699, 5819, 7735, 5455, 3115, 1, 22, 3895, 8, 9489, 9, 909, 14, 14, 13, 2953, 3455, 8401, 26, 2, 6, 5697, 10, 8889, 397, 10, 3253