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: ['P', 'W', 'n', '1345', '1093', 'g', '2805', 'v', '4359', '9271', '1567', '8959', '9483', 'd', '489', '8123', 'J', '6609', 'x', 'F', '9349', 'T', '239', '2679', 'A', '5969']

16, 23, 14, 1345, 1093, 7, 2805, 22, 4359, 9271, 1567, 8959, 9483, 4, 489, 8123, 10, 6609, 24, 6, 9349, 20, 239, 2679, 1, 5969