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]: ['7949', '8047', 't', '9913', 'd', '8641', 'n', '8383', '7493', '8819', '6981', 'n', '6287', '8685', 'b', '7535']
[EX A]: 7949, 8047, 20, 9913, 4, 8641, 14, 8383, 7493, 8819, 6981, 14, 6287, 8685, 2, 7535

[EX Q]: ['871', 'f', '2705', '773', '1661']
[EX A]: 871, 6, 2705, 773, 1661

[EX Q]: ['K', '4665', '7541', '2649', '9007', '3267', '929', 'B', 'K']
[EX A]:
11, 4665, 7541, 2649, 9007, 3267, 929, 2, 11