TASK DEFINITION: In this task, you are given inputs i,j, and A, where i and j are integers and A is a list. You need to list all elements of A from the ith element to the jth element in the reverse order. i and j will be non-negative, and will always have a value less than the length of A. i will always be less than j.
PROBLEM: 3, 7, ['S', 'b', 'Q', '5437', 'W', 'b', '1643', '519', '3809', 'T', '4567', 'D']

SOLUTION: 1643, b, W, 5437, Q

PROBLEM: 6, 8, ['a', '2135', '4583', '6467', 'i', 'M', 'A', '8341', 'f', '2943']

SOLUTION: 8341, A, M

PROBLEM: 21, 24, ['X', '7149', 'v', '989', 'A', '9121', 'T', '8933', '1953', '9421', '5427', 'K', '7837', '9549', 'R', '5253', 'T', 'M', 's', 'x', 'U', '901', 'o', 'q']

SOLUTION:
q, o, 901, U