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: ['4909', '6585', 'D', '3783', 'e', '2619', 'w']

4909, 6585, 4, 3783, 5, 2619, 23