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', '847', 'j', '9779', 'Y', '3623', 'r', '1151', 'm', '6197', 'd', 'c', '5667', 'D', '2757', 'v', '3331', 'q', 'S', 'e', 's', 'l', '4879', '8753']

11, 847, 10, 9779, 25, 3623, 18, 1151, 13, 6197, 4, 3, 5667, 4, 2757, 22, 3331, 17, 19, 5, 19, 12, 4879, 8753