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]: ['u', 'a', '9939', '9353', 'v', 'S', 'l', '981', 'P', 'q', 'M', 'w', '8419']
[EX A]: 21, 1, 9939, 9353, 22, 19, 12, 981, 16, 17, 13, 23, 8419

[EX Q]: ['8623', '1535', '2699', 'e', '1463', '279']
[EX A]: 8623, 1535, 2699, 5, 1463, 279

[EX Q]: ['1891', 'A', 'E', '2131', '7811', '9253', 'S', 'p', '641']
[EX A]:
1891, 1, 5, 2131, 7811, 9253, 19, 16, 641