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', '6153', 'e', 'C', '6445', '1229', '9463', 'U', 'O', 'd', 'h', 'r', '1221', 'q', 's', '151']
[EX A]: 21, 6153, 5, 3, 6445, 1229, 9463, 21, 15, 4, 8, 18, 1221, 17, 19, 151

[EX Q]: ['y', 'M', 'X', '6399', '8383', '4459']
[EX A]: 25, 13, 24, 6399, 8383, 4459

[EX Q]: ['9195', 'L', 'v', '7931', '69', '2883', '4539', '2789', '2443', '6219', 'd', 'M', '1397', 'W', 'k']
[EX A]:
9195, 12, 22, 7931, 69, 2883, 4539, 2789, 2443, 6219, 4, 13, 1397, 23, 11