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.

['p', '5493', '2947', 'Z', '8155', '747', 'R', '3199', 'J', 'F', '7579', 'r', '3903', '8923', 'd', '4307', '8331', '9981']
16, 5493, 2947, 26, 8155, 747, 18, 3199, 10, 6, 7579, 18, 3903, 8923, 4, 4307, 8331, 9981

['O', 'X', 'j', '6499', 'I', '359', '1913', 'M', '6771', 's', '1621', '8259', 'E', 'H', 'E', '3699', '3473', 'Q', 'c', 'A', '6265', 'n', 'L', '7003', 'H', '4743', '8579']
15, 24, 10, 6499, 9, 359, 1913, 13, 6771, 19, 1621, 8259, 5, 8, 5, 3699, 3473, 17, 3, 1, 6265, 14, 12, 7003, 8, 4743, 8579

['7497', '6517', '4699', '5705', '8363', 'h', 'f', 'V', 'z', 'v', 'R', '3321', '211', '2193', '6985', '4331', '2059', '2679', 'S', '5243', 'Q', 'r', 'R', '9173']

7497, 6517, 4699, 5705, 8363, 8, 6, 22, 26, 22, 18, 3321, 211, 2193, 6985, 4331, 2059, 2679, 19, 5243, 17, 18, 18, 9173