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.

[Q]: 9, 21, ['d', 'K', '4747', 'J', '5273', 'R', '5449', '6823', '2003', 'M', '3201', 'D', '5025', '5151', 't', '5203', '1073', 'E', 'O', 'M', 'R', '3039', '4781', 'b', '6819', '4025', '9125', '3733', 'x']
[A]: RMOE10735203t51515025D3201M2003


[Q]: 7, 16, ['J', '8449', '9507', '6729', '1979', 'm', 'W', '8217', 'E', 'r', 'J', '7923', 'n', 'A', 'M', '6715', 'F', 'b', 'I', '1375', '6587', 'h', '3101', 'N']
[A]: 6715MAn7923JrE8217W


[Q]: 6, 18, ['n', 'B', 'Y', 'c', '7657', '8735', '8629', '5813', 'f', 'h', 'J', 'U', '7137', 'O', '7487', '1597', 'd', '963', '5581', '6733', '9181', 'e', '3203', 'v', '9999', '8791', 'y', 'r', 'O', '5687']
[A]:
963d15977487O7137UJhf581386298735