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: ['2305', '7051', 'M', 'l', '8317', 'R', 'P', '1531', '8873', '8073', 'm', 'q', 'm', '6937', '1025', '8291', 'K', '445', '127', 'R', '9563', 'o', 'H', 'l']

2305, 7051, 13, 12, 8317, 18, 16, 1531, 8873, 8073, 13, 17, 13, 6937, 1025, 8291, 11, 445, 127, 18, 9563, 15, 8, 12