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: 1, ['n', 'y', 'k', 'F', '55']

SOLUTION: n, y, k, F

PROBLEM: 3, ['9777', '5813', 'b', '6431', 'N', 'I', '5109', '3441', '6915', 'p', '6227', '1815', '3195', '8763', 'F', '6837', '8463']

SOLUTION: 9777, 5813, b, 6431, N, I, 5109, 3441, 6915, p, 6227, 1815, 3195, 8763

PROBLEM: 4, ['P', 'Y', 'Z', '5021', 'Q', 'X', '8505', '1213', '6481', '2187', '8921', '7547', 'I', 't', '5037', '7153', '9501', '311', 'e', '6761', '9503', 'B', '6875', 'A', '2365', 'P', 's', 'A', '6795']

SOLUTION:
P, Y, Z, 5021, Q, X, 8505, 1213, 6481, 2187, 8921, 7547, I, t, 5037, 7153, 9501, 311, e, 6761, 9503, B, 6875, A, 2365