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, ['s', 'C', 'B', 'L', 'f']

SOLUTION: s, C, B, L

PROBLEM: 3, ['M', '3663', '101', 'p', 'T', 'J', 'N', '7915', '5897', 'm', 'g', '3357', 'j', 'S', '7271', 'B', '4625', '7827', 'w', 'B', '8123', '6623']

SOLUTION: M, 3663, 101, p, T, J, N, 7915, 5897, m, g, 3357, j, S, 7271, B, 4625, 7827, w

PROBLEM: 3, ['E', 'M', 'C', 'E', 'W', 'K', '3081']

SOLUTION:
E, M, C, E