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, 4, ['D', '7459', 'y', 'B', '1671', 'x', 'Y']
Example Output: By

Example Input: 8, 15, ['9515', 'Q', '9365', '8843', '1391', 'e', 'Z', 'G', '9771', 'c', 'k', '7273', 's', '7523', '1297', '1835']
Example Output: 12977523s7273kc9771G

Example Input: 8, 12, ['6009', 'm', '1571', 'J', '4631', '9755', 'Z', 'g', 'Z', '9287', '6905', 'R']
Example Output:
R69059287Zg