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: ['d', '1841', 'c', '1015', '8933', '5011', 'O', 'q', '5065', '7099', 'l', '6327', 'o', 'L', '3309', '1081', '6281', 's', '1567', 'W', 'b', 'p', '3353']

4, 1841, 3, 1015, 8933, 5011, 15, 17, 5065, 7099, 12, 6327, 15, 12, 3309, 1081, 6281, 19, 1567, 23, 2, 16, 3353