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', '3561', '1457', 'V', '8483', '4861', '9267', '9767', '8693', '6153', '9681', 'h', 'D', '7019', '3563', 'x', '1831', 'I', '3741', 'q', 'Q', '9885', '9603']

16, 3561, 1457, 22, 8483, 4861, 9267, 9767, 8693, 6153, 9681, 8, 4, 7019, 3563, 24, 1831, 9, 3741, 17, 17, 9885, 9603