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: ['887', '2443', '7085', 'a', '9297', '8487', '4919', 'Q', '7871', 'e', 'e', 'C', '5615', '3201', '2343', 'Q', '3159', '3143', 'n', '2925', 'K', '247', '2047', '6829', '8861', 'F']

887, 2443, 7085, 1, 9297, 8487, 4919, 17, 7871, 5, 5, 3, 5615, 3201, 2343, 17, 3159, 3143, 14, 2925, 11, 247, 2047, 6829, 8861, 6