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: ['3301', 'L', 'p', 'm', '6391', 'x', 'S', '1025', '5615', 'f', 'p', 'f', 'b', 'B', '6133', 'H', '173', '807', 'O', '7825', 'C', 'P', 'y', 'P', '4065', 'i', 'B', '9433']

3301, 12, 16, 13, 6391, 24, 19, 1025, 5615, 6, 16, 6, 2, 2, 6133, 8, 173, 807, 15, 7825, 3, 16, 25, 16, 4065, 9, 2, 9433