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: ['8565', '1641', 'u', '807', 'h', '9795', 'o', '2691', '677', 'v', '9803', 'o', 'g', '1117', '7053', '3299', 'H', 's', '1721', 'G', 'T', 'd', 'y']

8565, 1641, 21, 807, 8, 9795, 15, 2691, 677, 22, 9803, 15, 7, 1117, 7053, 3299, 8, 19, 1721, 7, 20, 4, 25