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, 7, ['n', 'N', 'n', 'M', 'w', 'i', '5239', '8379', 'G', '6635', '6913', '8461', 'c', 'b', '9023', 'r', '6015', 'q', 'G', 'v', 'W', '3315', 'i', '9759', 'D']

Ex Output:
5239iw


Ex Input:
2, 4, ['v', '807', 'C', 'n', '7213', 'l', '5943']

Ex Output:
nC807


Ex Input:
5, 10, ['2521', '7651', '6577', 'w', '3307', '8555', 'y', 'z', 'y', 'M', 'F', '8315', '9457', 'l', '6425', 'E', 'L', '4463']

Ex Output:

Myzy85553307