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: ['m', '8865', '7289', '4819', '3657', '9905', '8499', 'e', 'G', 'C', 'H', 'u', 'b', '7767', 'i', '9307', 'C', '6099', '2907', 'v', '5947', 'W', '637', 'd', 'h']

13, 8865, 7289, 4819, 3657, 9905, 8499, 5, 7, 3, 8, 21, 2, 7767, 9, 9307, 3, 6099, 2907, 22, 5947, 23, 637, 4, 8