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: ['K', '9245', 'Y', 's', '487', 'm', '7317', '5843', '6901', '4011', '4601']

11, 9245, 25, 19, 487, 13, 7317, 5843, 6901, 4011, 4601