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:
5, 9, ['q', 'g', '1455', 'f', '2605', 'B', 'r', 'B', 'y', 'z', '8295', '7259', '4945', '4519', '7885']

Ex Output:
yBrB2605


Ex Input:
12, 13, ['x', 'V', '4453', 'Q', 'r', 'p', 'M', '2321', 'Q', '9461', 'h', 'e', 'D', 'F', 'o', 'd', 'G', 'A', 'A', 's', '2777', '3963', '3363', 'C', 'X', 't']

Ex Output:
De


Ex Input:
2, 21, ['5887', 'c', 'g', 'A', 'A', '1093', 'F', '9325', '4503', '4857', '211', 'T', 'Q', 'r', 'C', 'c', 'v', 'B', 'B', 'k', 'T', 'L', 'W', 'E', 'k', '9613', 'z', 'q', 'e']

Ex Output:

TkBBvcCrQT211485745039325F1093AAgc