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: ['597', '1887', '6273', 'm', 'Y', '8909', 'c', '3627', 's', 'Y', '9317', '6327', '1197', 'y', 'u', 'M', '2661', 'N', 'q', '273', 'z', 'w', 'f', 'b', 'Z', 'x', '6501', 'd', '499', '1841', 'I', '6763', 'q', 'D', 'S', 'X', '5859', 'b']

597, 1887, 6273, 13, 25, 8909, 3, 3627, 19, 25, 9317, 6327, 1197, 25, 21, 13, 2661, 14, 17, 273, 26, 23, 6, 2, 26, 24, 6501, 4, 499, 1841, 9, 6763, 17, 4, 19, 24, 5859, 2