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: ['I', 'H', '7013', '253', 'K', '495', '9197', 'R', '8593', 'M', 'r', '4505', '675', '4577', 'I', '8579', '2011', '3349', '4283', '2605', '7453', '5681', 'z', '6805', 'v', '6511', 's', 'T', '6723', '7547', 'B', '317', '6025']

9, 8, 7013, 253, 11, 495, 9197, 18, 8593, 13, 18, 4505, 675, 4577, 9, 8579, 2011, 3349, 4283, 2605, 7453, 5681, 26, 6805, 22, 6511, 19, 20, 6723, 7547, 2, 317, 6025