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: 6, ['k', '1903', 'q', 'D', 'f', '3015', 'r', '4551', '8475', 'K', '8933', 'R', 'z', '8199', 'H', 'j', 'R', '2815', 'K', '3025', '8765', 'S', 'W', 'K', 'I', 'P', '1407', 'n']

SOLUTION: k, 1903, q, D, f, 3015, r, 4551, 8475, K, 8933, R, z, 8199, H, j, R, 2815, K, 3025, 8765, S

PROBLEM: 2, ['r', '7699', 's', 'c', '9657']

SOLUTION: r, 7699, s

PROBLEM: 7, ['263', '1639', '3401', 'G', 't', '1699', '1639', '8169', 'o', 'y', '5239', '9663', '93', '7659']

SOLUTION:
263, 1639, 3401, G, t, 1699, 1639