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:
2, 3, ['W', 'Y', '6265', 'D']

Ex Output:
6265Y


Ex Input:
4, 5, ['5611', '2101', '3829', 'H', 's', '6545', 'X', 'T', 'q', 'p', 'O', 'C', 'U']

Ex Output:
sH


Ex Input:
6, 6, ['8213', 'A', '9911', '4059', '5137', '8109', '8721', '9201']

Ex Output:

8109