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: ['4067', '1027', 'N', 'w', 'k', 'o', 'E', 'k', 'n', '9501', '3289', '217', 'f', '8437', 'S', 'z', '7599', '3627', '8745', 'R', '5809', 'k', 'm']

4067, 1027, 14, 23, 11, 15, 5, 11, 14, 9501, 3289, 217, 6, 8437, 19, 26, 7599, 3627, 8745, 18, 5809, 11, 13