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: ['3225', '8509', 'C', 'N', '2223', 'B', 'R', 'b', 'B', 'O', '1477', '1471', '97', 'D', '6585', '3745', 'c', '7589', 't', 'X', '2795', '1057', 'H', '4607', 'J']

3225, 8509, 3, 14, 2223, 2, 18, 2, 2, 15, 1477, 1471, 97, 4, 6585, 3745, 3, 7589, 20, 24, 2795, 1057, 8, 4607, 10