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

Ex Output:
YW


Ex Input:
1, 1, ['8037', 't']

Ex Output:
8037


Ex Input:
6, 14, ['k', '9345', '7549', 't', 'p', 'P', 'O', 'a', '8405', '6691', 'C', 't', 'h', '6277', '5725']

Ex Output:

6277htC66918405aOP