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: ['5069', 'o', '4559', 'w', '9367', 'j', 'D', 'Z', 'q', 'S', 'u', 'm', '3207', 'j', 'v', 'Y', 'i', '7397', 'c', '9657']

5069, 15, 4559, 23, 9367, 10, 4, 26, 17, 19, 21, 13, 3207, 10, 22, 25, 9, 7397, 3, 9657