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: ['L', '6745', 'O', '2427', '6111', 'S', 'V', 'e', '7409', 'k', 'e', 'n', 'n', 'z', '7075', 'J', 'q', '2061', 'v', '361', 'J', 'q', 'V', '1359', 'f']

12, 6745, 15, 2427, 6111, 19, 22, 5, 7409, 11, 5, 14, 14, 26, 7075, 10, 17, 2061, 22, 361, 10, 17, 22, 1359, 6