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: ['2237', '6391', 'w', 'E', 'o', '5597', '2549', 'c', 'q', 'y', 'F', 'M', '6895', 'W', '4535', '3639', 'W', 'm', 'B', '2243', '9767', 'U', '1611', 'b', '4879', '6219', '27', 'R', '8431', '4817', 'o', 'W']

2237, 6391, 23, 5, 15, 5597, 2549, 3, 17, 25, 6, 13, 6895, 23, 4535, 3639, 23, 13, 2, 2243, 9767, 21, 1611, 2, 4879, 6219, 27, 18, 8431, 4817, 15, 23