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.

['O', '3219', 'G', '1495', '4977', 't', '277', '6411', 'I', 'o', '7879', '3811', '581', '7163', 'Q', '9781', '9539', '2763', 'V', '8255', '6099', '4211', '3687', 'g', '9241']
15, 3219, 7, 1495, 4977, 20, 277, 6411, 9, 15, 7879, 3811, 581, 7163, 17, 9781, 9539, 2763, 22, 8255, 6099, 4211, 3687, 7, 9241

['U', 'C', '7173', 'r', 'Z', 'e', '4057', '5191', 'k', '73', '9335', '6143', '8871', '6023', '5765', 'O', '5379', '5269', '9935', 'K', 'V', '7561', 'j', 'R', 'o', '9207', 'F', '7169', '9941', 'm', 'J', '4203', 'k', 'B', 'G']
21, 3, 7173, 18, 26, 5, 4057, 5191, 11, 73, 9335, 6143, 8871, 6023, 5765, 15, 5379, 5269, 9935, 11, 22, 7561, 10, 18, 15, 9207, 6, 7169, 9941, 13, 10, 4203, 11, 2, 7

['4785', '8467', 'L', '8053', '6029', 'y', '7247', 'B', '9371', 'G', '3035', 'q', '767', 'T', '2133', '2221', 'I', 'J', '9245', '6501', 'y', 'z', '4937', '4289', 'L', '195', '7025', 'w', 'A', '1763', '1211', 'c', '3837', 'm', 'o', 'E', 'S', '5211', 's', '4297']

4785, 8467, 12, 8053, 6029, 25, 7247, 2, 9371, 7, 3035, 17, 767, 20, 2133, 2221, 9, 10, 9245, 6501, 25, 26, 4937, 4289, 12, 195, 7025, 23, 1, 1763, 1211, 3, 3837, 13, 15, 5, 19, 5211, 19, 4297