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: ['4737', '3067', 'v', '9765', '109', '2887', '5507']

4737, 3067, 22, 9765, 109, 2887, 5507