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.

['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

['V', 'z', '1757', 'K', 'z', 'v', '4761', '6505', '1369', 'Z', 'M', '8471', '7', '3963', '5891', 'W', '8417', '4899', '6537', 'W', 'I', 'M', '4479', 'x', '9089']
22, 26, 1757, 11, 26, 22, 4761, 6505, 1369, 26, 13, 8471, 7, 3963, 5891, 23, 8417, 4899, 6537, 23, 9, 13, 4479, 24, 9089

['7905', 'd', '2833', '4053', 'n', '9267', 'j', 'O', 'h']

7905, 4, 2833, 4053, 14, 9267, 10, 15, 8