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: ['3345', 'k', 'X', '575', 's', 'M', 'W', '3567', 'W', 'E', 'T']

3345, 11, 24, 575, 19, 13, 23, 3567, 23, 5, 20