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: ['v', 'V', 'J', '6645', '6659', '2699', '1799', '1969', 'K', '1249', '2401', '3987', '8561', 'H', 'y', '2459', 'M', 'R']

22, 22, 10, 6645, 6659, 2699, 1799, 1969, 11, 1249, 2401, 3987, 8561, 8, 25, 2459, 13, 18