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: ['B', 'K', 'o', '963', 'O', '6601', '7727', '2489', '7117', 'K', 'l', '8037', '1213', '1671', '2287', '3205', '2059', '5949', '3591', 'L', '4241', '181', '4447', 'c', '1929', '8497', '8619', '4981', '305', 'o', '7485', 'l', 'M', 'M', '4161', '4227', 'j']

2, 11, 15, 963, 15, 6601, 7727, 2489, 7117, 11, 12, 8037, 1213, 1671, 2287, 3205, 2059, 5949, 3591, 12, 4241, 181, 4447, 3, 1929, 8497, 8619, 4981, 305, 15, 7485, 12, 13, 13, 4161, 4227, 10