TASK DEFINITION: In this task, you are given inputs i and A, where i is an integer and A is a list. You need to list all the elements of A preceding the last i elements. i will always have a value less than the length of A.
PROBLEM: 2, ['1713', 'o', '6397', '4329', 'R', '4123', '5297']

SOLUTION: 1713, o, 6397, 4329, R

PROBLEM: 6, ['1865', '5353', 'H', 'X', 'N', '5561', 'A', 'o', '8715', 'w', '6513', '8239', '3677', 'W', '7459', 'K', 'F', '39', '307', '7629', '6517', '9233']

SOLUTION: 1865, 5353, H, X, N, 5561, A, o, 8715, w, 6513, 8239, 3677, W, 7459, K

PROBLEM: 5, ['Q', '6537', 'n', '7925', '8847', 'l', 'B', '9377', 'N', 'W']

SOLUTION:
Q, 6537, n, 7925, 8847