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: 5, ['l', '1473', '6251', '1565', '4141', '1871', 's', 'v', 'y', 'd', '2539', '1435', '6661', '1285', '6317', '9047', '2543', 'u', '3483', 'y', '8777', 'y', '4333', 'C']

SOLUTION: l, 1473, 6251, 1565, 4141, 1871, s, v, y, d, 2539, 1435, 6661, 1285, 6317, 9047, 2543, u, 3483

PROBLEM: 1, ['O', '6951', '5741']

SOLUTION: O, 6951

PROBLEM: 2, ['T', 'w', 'Z', 'T', 'N']

SOLUTION:
T, w, Z