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.

['t', '5153', 'I', '5033', 'W', 'D', 'R', '3547', 'p', '269', 'J', 'a', 'O', 'L', '8845', 'E', 'Z', '1983', '3045']
20, 5153, 9, 5033, 23, 4, 18, 3547, 16, 269, 10, 1, 15, 12, 8845, 5, 26, 1983, 3045

['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

['F', 'B', 'v', '8621', '8063', '8705', '7127', '5829', '2349', 'x', '2263', '3749', 'i', '3359', '1531', '4367', 'H', 's', 'p', 'X', '5041', 'w', '6469', 'l', '8371', 'h']

6, 2, 22, 8621, 8063, 8705, 7127, 5829, 2349, 24, 2263, 3749, 9, 3359, 1531, 4367, 8, 19, 16, 24, 5041, 23, 6469, 12, 8371, 8