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: ['2769', 'p', '6953', '2529', '1113', '3487', '535', 'z', '8323', '9555', 'c', '6347', 'r', '9021', 'd', 'Z', 'j', '5955', 'r', '6651', '2745', 'u', 'B', '143', 'm', '4533']

SOLUTION: 2769, 16, 6953, 2529, 1113, 3487, 535, 26, 8323, 9555, 3, 6347, 18, 9021, 4, 26, 10, 5955, 18, 6651, 2745, 21, 2, 143, 13, 4533

PROBLEM: ['A', 'I', '9305', '8043', '5795', 'W', '8343', '1885', 'L', 'A', '9939', '3239', '5333', 'F', '8141', 'u', '6229', 'i', 'H', '3959', '989', '9961', '9205', 'Z', '7153', '3365', 'X', 'N', '9831', '3819', '7429', 'B', '5155', 'O', 'q', '9145', 'w', '8813', 'n']

SOLUTION: 1, 9, 9305, 8043, 5795, 23, 8343, 1885, 12, 1, 9939, 3239, 5333, 6, 8141, 21, 6229, 9, 8, 3959, 989, 9961, 9205, 26, 7153, 3365, 24, 14, 9831, 3819, 7429, 2, 5155, 15, 17, 9145, 23, 8813, 14

PROBLEM: ['t', '4669', 'O', 'Y', '3447', '7555', 'P', 'c', '3677', '4059', '243', 'G']

SOLUTION:
20, 4669, 15, 25, 3447, 7555, 16, 3, 3677, 4059, 243, 7