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, 20, ['5251', 'V', '1289', 'y', '9731', 'f', 's', '2535', 'L', '2855', 'Y', '6483', 'F', 'V', '6663', 'C', '7567', '2367', 'd', '2685', 'K', 'O', 'S', '8315', 'B', 'v', '331', 'H', '6567', 't']

Ex Output:
2685d23677567C6663VF6483Y2855L2535


Ex Input:
4, 5, ['O', '6353', 'n', '3645', 'R', 'd']

Ex Output:
R3645


Ex Input:
4, 11, ['8245', 'W', 'o', 'T', '2653', '9341', 'W', '2561', 'r', 'n', '2997', 'r']

Ex Output:

2997nr2561W93412653T