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:
10, 13, ['n', '6747', '2749', 'r', '943', '8729', 'a', 'G', '2181', 'U', '1385', 'p', '2739', '9649']

Ex Output:
2739p1385U


Ex Input:
5, 10, ['j', '2883', '9743', '9417', 'C', '3167', 'k', '6035', '201', '8563']

Ex Output:
85632016035k3167C


Ex Input:
7, 8, ['6817', '3283', 'd', 'R', 'H', '1371', '575', '657']

Ex Output:

657575