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: ['3009', 'o', 'h', '523', '69', 'T', '9509', '7717', '5381', 'q', 'G', '5179', 'S', '3671', 'c', 'O', 'q', '5863', '9889', '2957', 'h', 'F', '9051', '5781', 'I', 'x', '3069', '6527', 's', '3039', 'n', '3859', 'K', '5533', '2823', 's', 't']

3009, 15, 8, 523, 69, 20, 9509, 7717, 5381, 17, 7, 5179, 19, 3671, 3, 15, 17, 5863, 9889, 2957, 8, 6, 9051, 5781, 9, 24, 3069, 6527, 19, 3039, 14, 3859, 11, 5533, 2823, 19, 20