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: ['5015', '6827', 'S', '369', '4727', 'v', '3029', '5315', '5655', '4791', '2411', '321', 'W', '2747', '7671', 'S', '4671', '5449', '3363', 'J', 'J', 'I', 'o', '8175', '3279', '7719', 'X', 'A', '7559', 'h']

5015, 6827, 19, 369, 4727, 22, 3029, 5315, 5655, 4791, 2411, 321, 23, 2747, 7671, 19, 4671, 5449, 3363, 10, 10, 9, 15, 8175, 3279, 7719, 24, 1, 7559, 8