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: ['P', 'K', '2545', '9505', '3071', 'X', 'd', '5507', '8689', 'Q', 'n', 'Q', '3719', '3053', '7085', '7961', '3183', '7801', '7345', 'D', 'a', '859', 'g', 'X', 'y', 'G', '9473', 'W', '1105', 'z', 'm', 'D']

16, 11, 2545, 9505, 3071, 24, 4, 5507, 8689, 17, 14, 17, 3719, 3053, 7085, 7961, 3183, 7801, 7345, 4, 1, 859, 7, 24, 25, 7, 9473, 23, 1105, 26, 13, 4