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.

['1831', '545', 'k', '5975', 'Q', '6421', 'A', 'h', '9831', 'i', 'X', '3289', 'r', 'o', 'y', '7673']
1831, 545, 11, 5975, 17, 6421, 1, 8, 9831, 9, 24, 3289, 18, 15, 25, 7673

['P', '8023', 'n', 'M', '9481', 'K', '9377', 'R', '2879', 'K', '9279', 'b', '9483', '3013', '6553', '381', 'f']
16, 8023, 14, 13, 9481, 11, 9377, 18, 2879, 11, 9279, 2, 9483, 3013, 6553, 381, 6

['y', '2233', 'M', '7649', '6997', '8023', 'G', 'E', '8059', 'D', 'v']

25, 2233, 13, 7649, 6997, 8023, 7, 5, 8059, 4, 22