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', '2299', 'O', '4141', 'g', 'b', 'o', '891', '6669', 'V', 'y', '2385', '4693', 'x', 'i', '9597', 'e', 'U', 'v', '8121', '563', '8517', 'L', '9789', 'H', '631', 'h', 'C', '2813', '691', '6055', 'b', '5167', 'p', 'c', '4325', '6559', '8321']

11, 2299, 15, 4141, 7, 2, 15, 891, 6669, 22, 25, 2385, 4693, 24, 9, 9597, 5, 21, 22, 8121, 563, 8517, 12, 9789, 8, 631, 8, 3, 2813, 691, 6055, 2, 5167, 16, 3, 4325, 6559, 8321