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: ['q', '6403', '2517', '195', 'Y', '4113', 't', '5003', 'o', '5155', 'i', '4861', 'S', '197', 'T', '901', '9937', 'X', 'x', 'H', '4403', '1927', 'N', 'S', 'a', '3315', '9173', '3883', 'f', 'M', 'd']

17, 6403, 2517, 195, 25, 4113, 20, 5003, 15, 5155, 9, 4861, 19, 197, 20, 901, 9937, 24, 24, 8, 4403, 1927, 14, 19, 1, 3315, 9173, 3883, 6, 13, 4