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: ['q', '1723', 'p', 's', '8171', 'e', 'G', 'w', 'h', 'n', '7283', '8359', '3339', 'S', '2711', '3181', '8811', 'E', '8523', 'W']

17, 1723, 16, 19, 8171, 5, 7, 23, 8, 14, 7283, 8359, 3339, 19, 2711, 3181, 8811, 5, 8523, 23