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: 4, 4, ['U', '5381', '9095', '9747', '7213', '3615', '1779', '1231', '4317', '2613', '7557', '9931', 'Q']
Example Output: 9747

Example Input: 4, 10, ['4619', '1689', '1987', '9711', 'K', 'a', '9193', 'y', 'c', 'O', 'u', 'h', 'v', 'o', '927', '2323', 'Z', '5115']
Example Output: Ocy9193aK9711

Example Input: 19, 21, ['8435', '6513', 'f', 'F', 'b', 'Y', 'U', '9913', '9651', '1047', 'S', '1827', 'O', '6041', '8895', 'E', '5311', 't', '1909', 'i', '8829', 'y', '6145', 'M', '4921', '6355', '2007', '7061', '7067']
Example Output:
8829i1909