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: ['c', 'E', '6877', 'I', 'E', 'Y', 'S', 'y', '9295', 'T']

3, 5, 6877, 9, 5, 25, 19, 25, 9295, 20