TASK DEFINITION: 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.
PROBLEM: ['d', '903', 'N', 'n', '1959', 'U', 'Z', 'v', 'f', '6207', '4947', '9471', 'v', '481', 'Z', '163']

SOLUTION: 4, 903, 14, 14, 1959, 21, 26, 22, 6, 6207, 4947, 9471, 22, 481, 26, 163

PROBLEM: ['c', 's', 'L', 'J', '7597', 'Z', '3517', 'F', '8053', 'J', 'N', 'H', 's', '2241', 'f', 'h', 'e', 'F', 'T', '5613', '425', 'k', '8125', '2457', '1269', 'p', 'b', '175']

SOLUTION: 3, 19, 12, 10, 7597, 26, 3517, 6, 8053, 10, 14, 8, 19, 2241, 6, 8, 5, 6, 20, 5613, 425, 11, 8125, 2457, 1269, 16, 2, 175

PROBLEM: ['n', '5657', '7593', 'X', '3445', 'c', 'B', '8801', 'q', '4519', '2123', 'U', '5053', '4539', 'L', 'v', 'Z', 't', 'W', 'a', 'l', 'A', '7011', 't', 'I', '5089', '4297', '2795', '7511', '4591', '2595']

SOLUTION:
14, 5657, 7593, 24, 3445, 3, 2, 8801, 17, 4519, 2123, 21, 5053, 4539, 12, 22, 26, 20, 23, 1, 12, 1, 7011, 20, 9, 5089, 4297, 2795, 7511, 4591, 2595