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: ['7967', 'K', '9601', '19', '8829', '8189', '4361', 'I', 'Y', '1589', '1683', '5953', '4561', 'P', '8069', '7761', '3827', '9441', '8055', 'h', '9241', '7675', 'i', 'O', 'u', '8497', 'g', '8987', '6459', 'A']

7967, 11, 9601, 19, 8829, 8189, 4361, 9, 25, 1589, 1683, 5953, 4561, 16, 8069, 7761, 3827, 9441, 8055, 8, 9241, 7675, 9, 15, 21, 8497, 7, 8987, 6459, 1