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: ['S', '1823', '7679', '6041', '2475', 'w', '161', 'm', '9007', '8879', 'w', '4427', 'q', 'P', '6649', 'k', 'f', '6813', '683', 'S', 'p', 't', '7107', '7325', 'O', '9723', 'G', '1435', '9463', 'r', '863', 'h', 'A', '1461']

19, 1823, 7679, 6041, 2475, 23, 161, 13, 9007, 8879, 23, 4427, 17, 16, 6649, 11, 6, 6813, 683, 19, 16, 20, 7107, 7325, 15, 9723, 7, 1435, 9463, 18, 863, 8, 1, 1461