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]: ['1533', '8627', '2455', 'W', 'Q', 'v', 'Y', 'F', '135']
[EX A]: 1533, 8627, 2455, 23, 17, 22, 25, 6, 135

[EX Q]: ['5481', 'W', '1285', 'U', '6155', '1505', 'Z']
[EX A]: 5481, 23, 1285, 21, 6155, 1505, 26

[EX Q]: ['c', '1449', 'G', '8729', 'i', '8151', 'Y', '995', 'i', 'm', 'W', '4053', '8325', 'L', 'l', 'f', '6219', 'L', 'i']
[EX A]:
3, 1449, 7, 8729, 9, 8151, 25, 995, 9, 13, 23, 4053, 8325, 12, 12, 6, 6219, 12, 9