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]: ['I', 'y', 'E']
[EX A]: 9, 25, 5

[EX Q]: ['1705', '2311', 'l', 't', '9673']
[EX A]:
1705, 2311, 12, 20, 9673