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.

Input: Consider Input: 5, 6, ['9891', '9721', 'q', 'u', '8721', 'l', 'm', 'p']

Output: l8721


Input: Consider Input: 3, 4, ['d', '169', 'W', 'Y']

Output: YW


Input: Consider Input: 15, 19, ['2673', '7617', 'Q', 'c', 'd', 'y', 'w', '3743', 'A', '1657', '5731', 'r', '3335', '4399', '9557', '353', '3409', '5841', '7627', 'y', '8077', '239', 'q', 'x', '9805', 'L']


Output: 7627584134093539557