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:
8, 10, ['A', 'C', '6441', '275', 'O', 'v', '5787', 'E', 'h', '6821', 'x', '2819', 'N', '3909']

Ex Output:
6821hE


Ex Input:
8, 8, ['6985', 'w', 'k', 'O', 's', '2033', '7631', '7177', '6875', 'X', '6053']

Ex Output:
7177


Ex Input:
5, 11, ['8721', 'P', '5115', 'B', 'U', 'I', '4367', '4699', '7671', '4413', 'H', 'e', '4575', '7777', '3479']

Ex Output:

H4413767146994367IU