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: ['I', 'd', 'l', 'z', 'a', 't', 'o', 'y', 'O', '7745', 'h']

9, 4, 12, 26, 1, 20, 15, 25, 15, 7745, 8