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]: ['997', '3843', '5991', '5415', 'U', 'V', '619', '9381', 'a', 'o', '9493', 'M', 'E', 'g', '9989', '9243']
[EX A]: 997, 3843, 5991, 5415, 21, 22, 619, 9381, 1, 15, 9493, 13, 5, 7, 9989, 9243

[EX Q]: ['1207', 'B', '4273', '7081', '6009', '3933', '5589', '1543', '2631']
[EX A]: 1207, 2, 4273, 7081, 6009, 3933, 5589, 1543, 2631

[EX Q]: ['s', '3637', 'W', '9687', '2697', 'W', '4067', 'i', 'Z', '8393', 'T', '4855', 'Z', 'p', '8107', 'W', '4105', 'T']
[EX A]:
19, 3637, 23, 9687, 2697, 23, 4067, 9, 26, 8393, 20, 4855, 26, 16, 8107, 23, 4105, 20