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, ['6137', 'f', 'I', '8297', 'd', 'L', '6471', '2965', 'H', '533', '2809', 'U', 'A', '7481', 'l', 'e', 'n', 'd', '6589', 'n', 'c', 'X', 'I', 'I', '3217']

SOLUTION: 6137, f, I, 8297, d, L, 6471, 2965, H, 533, 2809, U, A, 7481, l, e, n, d, 6589, n, c, X, I

PROBLEM: 2, ['3441', '7719', 'K', '3183']

SOLUTION: 3441, 7719

PROBLEM: 3, ['545', 'Q', '2923', '171', 'M', '8681', 'S', '9857']

SOLUTION:
545, Q, 2923, 171, M