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: ['f', '353', '237', 'o', 'Q', '4495', 'c', '9567', '5689', 'm', 'q', '885', '5809', 'M', 'i']

6, 353, 237, 15, 17, 4495, 3, 9567, 5689, 13, 17, 885, 5809, 13, 9