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, ['U', 'l', 'M', '1741']

SOLUTION: U, l

PROBLEM: 2, ['P', '3643', 'a', 't', '9255', '3813', 'r', '9225', '7037', '8731', 'r', '7979', 'q', '1729', '5547', 'w', '5469', '1631', 'Q', '7431', '7129', 'a', 'N']

SOLUTION: P, 3643, a, t, 9255, 3813, r, 9225, 7037, 8731, r, 7979, q, 1729, 5547, w, 5469, 1631, Q, 7431, 7129

PROBLEM: 1, ['Y', 'B', 'Q', '5743']

SOLUTION:
Y, B, Q