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, ['687', '8957', '9003', '9701', 'K', '9929', '6287', 'r', 'd', '8885', '1275', '3815', 'i', 'W', 'K', '9301', '2777', '5839', 's', '2333', '1057', 'a']

SOLUTION: 687, 8957, 9003, 9701, K, 9929, 6287, r, d, 8885, 1275, 3815, i, W, K, 9301, 2777, 5839, s, 2333

PROBLEM: 3, ['3395', '1491', '6533', 'W', 'Q', 'I', 'R']

SOLUTION: 3395, 1491, 6533, W

PROBLEM: 4, ['8129', '2963', 'i', '2027', '4255', '8523', '8945', '3563', '9055']

SOLUTION:
8129, 2963, i, 2027, 4255