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.

Example Input: 3, 15, ['O', 'X', 'Y', '8437', 'O', 'P', '5727', 'S', 'S', 'X', 'p', 'X', 'v', 'C', 'P', 'C', '9615', '2595', '4587', '6235', '557', '2491', 'p', '7927', 'f', '4643', '1519']
Example Output: PCvXpXSS5727PO8437Y

Example Input: 6, 13, ['I', 'Z', '3859', 'M', '5135', 'X', 'h', '1215', 'z', '4385', 'Q', 'H', 'f']
Example Output: fHQ4385z1215hX

Example Input: 1, 6, ['a', 'I', 'M', 'F', 'q', '8047', '3661']
Example Output:
8047qFMIa