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: ['9195', 'L', 'v', '7931', '69', '2883', '4539', '2789', '2443', '6219', 'd', 'M', '1397', 'W', 'k']

9195, 12, 22, 7931, 69, 2883, 4539, 2789, 2443, 6219, 4, 13, 1397, 23, 11