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: ['8695', '8487', 'P', '6235', 'R', '6217', '7239', '7511', '379', '8765', '3621', 'V', '6373', '991', '1877', 'I', '5037', 'o', '1299', '1371', 'D', 'r', 'K', '9955']

8695, 8487, 16, 6235, 18, 6217, 7239, 7511, 379, 8765, 3621, 22, 6373, 991, 1877, 9, 5037, 15, 1299, 1371, 4, 18, 11, 9955