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]: ['6881', 'F', '4759', '5797', '4879', '5761', '9913', '8509', 'c', 'X', 'U']
[EX A]: 6881, 6, 4759, 5797, 4879, 5761, 9913, 8509, 3, 24, 21

[EX Q]: ['j', 'u', '7291', 'i', '3329', 's', 'p', 'A', 'h', 'i', 'a', 's', '6987', '7169', 'T', 'K', 'C', '4991', 'A', 'A', 'h', '6997', 'h']
[EX A]: 10, 21, 7291, 9, 3329, 19, 16, 1, 8, 9, 1, 19, 6987, 7169, 20, 11, 3, 4991, 1, 1, 8, 6997, 8

[EX Q]: ['b', 'O', 'K', '3049', 'M', '5171', 'i']
[EX A]:
2, 15, 11, 3049, 13, 5171, 9