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: ['9849', '9793', '3857', '5401', '6587', 'h', '5163', 'r', 'p', 'M', 'Y', 'R', 'w', 'f', 'E', 'd', 'Y', 'G', '8503', '5593', 'd', 'B', '6059', 'Z', '1653', 'D', '9919', '8469', '7529', '1021', '6429', 'C', '1183', '9211', '3479', '797', 'X', '5691', '6681']

9849, 9793, 3857, 5401, 6587, 8, 5163, 18, 16, 13, 25, 18, 23, 6, 5, 4, 25, 7, 8503, 5593, 4, 2, 6059, 26, 1653, 4, 9919, 8469, 7529, 1021, 6429, 3, 1183, 9211, 3479, 797, 24, 5691, 6681