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: ['6761', 'D', '3279', 'E', 'Z', 't', '3441', 'D', 'r', 'O', '6795']

6761, 4, 3279, 5, 26, 20, 3441, 4, 18, 15, 6795