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.

[EX Q]: ['2973', 'a', '6251', 's', '5009', 'm', 'G']
[EX A]: 2973, 1, 6251, 19, 5009, 13, 7

[EX Q]: ['4347', 'z', '8559']
[EX A]: 4347, 26, 8559

[EX Q]: ['5429', '1401', '5767', 's', 't', '7107', 'Q', '7609', 'I', 'Q', '9377', '3', '6023', 'M', '5923', '1365', '9213', 'p', '6373', 'q', '4605', 'H', 'G', 'c', '6161']
[EX A]:
5429, 1401, 5767, 19, 20, 7107, 17, 7609, 9, 17, 9377, 3, 6023, 13, 5923, 1365, 9213, 16, 6373, 17, 4605, 8, 7, 3, 6161