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: ['k', 'S', 'j', '967', 'a', '9579', '6745', 'm', 'Y', '6091', '3083', '8981', 'J', 'F', 'e', 'x', 'y']

11, 19, 10, 967, 1, 9579, 6745, 13, 25, 6091, 3083, 8981, 10, 6, 5, 24, 25