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: ['9395', '3729', '2465', 'r', '1429', 'Y', 'd', '7799', 'z', '9213', '2171', 'z', '2483', 'F', 'H', '3983', '2997', 'E', '6133', 's', '9395', '873', '7759', '9265', '4739', 't', '6839', 'W']

9395, 3729, 2465, 18, 1429, 25, 4, 7799, 26, 9213, 2171, 26, 2483, 6, 8, 3983, 2997, 5, 6133, 19, 9395, 873, 7759, 9265, 4739, 20, 6839, 23