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: ['31', '9311', '1885', 'q', '6957', 'Q', '8909', '7405', '5435', 'q', '9345', 'B', '4563']

31, 9311, 1885, 17, 6957, 17, 8909, 7405, 5435, 17, 9345, 2, 4563