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: ['5671', 'o', 'Y', 'S', '3115', '6633', 'W', '8503', '2501', 'p', '851', '3295', '7253', '1587', 'P', 'J', '6187', 'o', 'h', 'h', 'X', 'z']

5671, 15, 25, 19, 3115, 6633, 23, 8503, 2501, 16, 851, 3295, 7253, 1587, 16, 10, 6187, 15, 8, 8, 24, 26