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]: ['2087', '5779', 'O', 'F', '8401', '2949', 'e', 'z', '1513', 'z', '3941', '2587', 'w', 'p', 'i', '3233', 'D']
[EX A]: 2087, 5779, 15, 6, 8401, 2949, 5, 26, 1513, 26, 3941, 2587, 23, 16, 9, 3233, 4

[EX Q]: ['4673', 'd', 'u', '8773', 'j', 'A', 'z', '811', 'u', '5699']
[EX A]:
4673, 4, 21, 8773, 10, 1, 26, 811, 21, 5699