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, 4, ['O', '7177', 'f', 'Q', '3429', '3121', '4399', 'H', '6081', 'V', '4367', '7889', '5533', '9109', 'K']

Ex Output:
Qf7177


Ex Input:
3, 8, ['5781', 'N', '6869', '4749', 'n', 'A', 'v', '9745', 'T', '9167', 'Q', 'u', 'V', '2447', '3653', 'A', 'L', 'D']

Ex Output:
9745vAn47496869


Ex Input:
11, 19, ['V', '9403', '4205', 'K', 'r', 'S', '8911', '1643', 'c', '1181', 'p', 'W', 'K', '5231', '1215', '3493', 'P', '3507', '5413', '3915', 'i']

Ex Output:

54133507P349312155231KWp