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', '3827', '3707', '3781', 'K', 'G', 'r', 'P', 'D', 'E', 'k', 'x', '705']

4, 3827, 3707, 3781, 11, 7, 18, 16, 4, 5, 11, 24, 705