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, ['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: 6, ['r', 'p', '7223', '9051', 'u', 'v', '375', 'w', '8567', 'q', 'N', '9645', 'q', '8191', '4949', 'e']

SOLUTION: r, p, 7223, 9051, u, v, 375, w, 8567, q

PROBLEM: 5, ['829', '1423', 'n', 'D', '1943', '6099', 'g', 'O', '3393', 'f', '1405', '7371', 'Z']

SOLUTION:
829, 1423, n, D, 1943, 6099, g, O