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, ['U', 'l', 'M', '1741']

SOLUTION: U, l

PROBLEM: 2, ['H', 'F', 'J', 'X', 'S', 'r', '4103', 'N', '73', 'A', 'i']

SOLUTION: H, F, J, X, S, r, 4103, N, 73

PROBLEM: 1, ['4649', '5817', '1893', 'U', 'P', 'v', '3917', '2959', '5807']

SOLUTION:
4649, 5817, 1893, U, P, v, 3917, 2959