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: ['q', '8245', '5659', '195', '9859', 'u', '1253', 'Q', '4885', 'x', '351', '4267']

17, 8245, 5659, 195, 9859, 21, 1253, 17, 4885, 24, 351, 4267