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.

['K', 'f', 'N', 'a', 'H', '5999', 'g', '9589', 'N', 'h', '8451', '7797', 'e', 'P', '785']
11, 6, 14, 1, 8, 5999, 7, 9589, 14, 8, 8451, 7797, 5, 16, 785

['2515', 'a', 'e', 'n', '281', 'I', 'S', '8307', '3617', '6139', 'H', 'L', 'J', '4055', '9429', '5329', '9301', '2151', '5207', '1449', '4825', 'B', '7715', '4913', 'N', 'U', '9125', 'Y', '4343', 'R', 'x', 'f', '8727', '4801', 'G', 'x', '1377', '857', 'R', 'O']
2515, 1, 5, 14, 281, 9, 19, 8307, 3617, 6139, 8, 12, 10, 4055, 9429, 5329, 9301, 2151, 5207, 1449, 4825, 2, 7715, 4913, 14, 21, 9125, 25, 4343, 18, 24, 6, 8727, 4801, 7, 24, 1377, 857, 18, 15

['8459', 'O', 'a', '6065', '2337', '6235', '901', '5281', '3695', 'i', 'p', '9493', 'e', 'j']

8459, 15, 1, 6065, 2337, 6235, 901, 5281, 3695, 9, 16, 9493, 5, 10