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: ['3913', 'H', '2277', 'T', '7943', 'j', '777', '8295', 'B', '5097', '959', 'Z', '5487', '9475', '1665', '3465', 'G', 'g', 'X', '9361', 'M', 's', 'n', '6201', 'Q', '6001', 'a', '4963', '7933', '9409', 'Z', 'z', 'h', '31', 'K', 'D']

3913, 8, 2277, 20, 7943, 10, 777, 8295, 2, 5097, 959, 26, 5487, 9475, 1665, 3465, 7, 7, 24, 9361, 13, 19, 14, 6201, 17, 6001, 1, 4963, 7933, 9409, 26, 26, 8, 31, 11, 4