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', '9405', '4533', '635', 'K', 'R', 'm', '1161', '5695', '3555', 'd', 'W']

17, 9405, 4533, 635, 11, 18, 13, 1161, 5695, 3555, 4, 23