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: ['o', 'r', 'h', 'e', '1703', 'i', 'y', '3767', 'N', '9759', 'f', '5807', 'h']

15, 18, 8, 5, 1703, 9, 25, 3767, 14, 9759, 6, 5807, 8