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: ['P', 'p', '9215', '2503', '1319', 'o', 'P', 'q', '8069', '2037', '5543', '3153', 'c', '5965', 'N', 'X', '4167', 'O', '3187', '8857', '4457', '2695', '7523', '2219', 'q', '3989']

16, 16, 9215, 2503, 1319, 15, 16, 17, 8069, 2037, 5543, 3153, 3, 5965, 14, 24, 4167, 15, 3187, 8857, 4457, 2695, 7523, 2219, 17, 3989