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: ['6971', '4131', 'O', '2493', 'y', '4477', '7595', 'y', 'q', 'q', 'Z', '4425', 'f', 'd', 'b', 'Q', 'R', 'I', '4327', '4061', '7265', 'v', 'X', 'x', '7469', 'j', '1915', '701', '4965', '5655', 'E', '1001', '3265', '705', 'm', '9785', '7037', 'H', '1127', '8547']

6971, 4131, 15, 2493, 25, 4477, 7595, 25, 17, 17, 26, 4425, 6, 4, 2, 17, 18, 9, 4327, 4061, 7265, 22, 24, 24, 7469, 10, 1915, 701, 4965, 5655, 5, 1001, 3265, 705, 13, 9785, 7037, 8, 1127, 8547