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 find all elements of A from the ith element to the jth element, reverse the order in which they occur, and then concatenate them to output the resultant string. 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. Perform the operations in order, i.e., do not concatenate the elements and then reverse the string.

Ex Input:
14, 15, ['8571', '9637', 'o', '7821', '3579', 'S', '6353', 'Z', 'D', 'a', '4885', 'P', 'J', 'J', 'U', '2133', '5421', 'F', '4243', 'i', '8035', 'G', '1391', 'p', 'l', '9621', 'y', '145']

Ex Output:
UJ


Ex Input:
5, 10, ['j', '2883', '9743', '9417', 'C', '3167', 'k', '6035', '201', '8563']

Ex Output:
85632016035k3167C


Ex Input:
14, 21, ['j', '2231', 'j', '2695', 'X', '8449', 'Z', 'W', '9337', 'W', '127', 'D', 'B', '3379', '9225', '4619', 'J', 'M', '8233', 'f', 'g']

Ex Output:

gf8233MJ461992253379