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: 4, ['7991', 'm', 'P', '1029', 'D', 'x', 'L', '3549', '2747', '5545', 'l', 'T', 'S', 'b', '929', 'R', '8099', 'R', 'c', 'i', 'v', 'q', 'g', '2107', '6375']

SOLUTION: 7991, m, P, 1029, D, x, L, 3549, 2747, 5545, l, T, S, b, 929, R, 8099, R, c, i, v

PROBLEM: 1, ['U', '8289', '3197']

SOLUTION: U, 8289

PROBLEM: 8, ['M', '4905', 'W', '9345', '5349', 'J', '769', 'L', 'L', 'f', 'O', 'a', '2433', '1787', '2709', '1045', '4861', 'A', 'A', '3463', 'u', '8737', 'Q', '8989', '2181']

SOLUTION:
M, 4905, W, 9345, 5349, J, 769, L, L, f, O, a, 2433, 1787, 2709, 1045, 4861