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: ['1565', 's', '7539', '1169', '5047', 'P', 'J', '2451', '9167', 'N', '3565', 'p', '365', '1005', 'v', '8225', 'v', '1139']

1565, 19, 7539, 1169, 5047, 16, 10, 2451, 9167, 14, 3565, 16, 365, 1005, 22, 8225, 22, 1139