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', 'L', 'k', 'l', 'p', '9251', '8245', '3595', 'o', '8619', '5619', '3907', 'l', 'K', '3047', '7941', 'a', '8775', '5793', 'N', 'e', '93', '7287', 'Z', 'D', '7515', 'B', 'j', 'V', 's', 'W', 'L', 'N', 'o', 'g', '2475', '4363', 'B']

11, 12, 11, 12, 16, 9251, 8245, 3595, 15, 8619, 5619, 3907, 12, 11, 3047, 7941, 1, 8775, 5793, 14, 5, 93, 7287, 26, 4, 7515, 2, 10, 22, 19, 23, 12, 14, 15, 7, 2475, 4363, 2