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: 3, ['u', 's', 'k', '5215', '9609', '1617', 'i']

SOLUTION: u, s, k, 5215

PROBLEM: 3, ['p', '7857', 'h', '7041', '7917', '1685', 'o', 'P', '5675', 'W', 'Z', 'L', 'W', 'z', '3111', 'm', 'n', '8823', 'R', '5619', '9219', 'M', 'a', '4991', '7801', '8387', '7483', 'Q', '789']

SOLUTION: p, 7857, h, 7041, 7917, 1685, o, P, 5675, W, Z, L, W, z, 3111, m, n, 8823, R, 5619, 9219, M, a, 4991, 7801, 8387

PROBLEM: 8, ['F', 'U', '1607', '2673', '9695', 'S', '9605', '2759', 'u', '1943', '8823', 'V', '1021', 'X', 'Z', 'i', '7599', '613', 'X', '1581', 'c', 'd', '6935', '4449', 'Z', 'V', 's']

SOLUTION:
F, U, 1607, 2673, 9695, S, 9605, 2759, u, 1943, 8823, V, 1021, X, Z, i, 7599, 613, X