You will be given a definition of a task first, then some input of the task.
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.

['4605', '2813', '7587', 'c', '5807', 'P', '8343', 'B', '5459', 'E', 'I', 'G']
Output:
4605, 2813, 7587, 3, 5807, 16, 8343, 2, 5459, 5, 9, 7