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, 6, ['691', 'Q', 'X', 'A', '2501', '7941', 'e', '8967', 'm', '9729', 'O', 't', '7609', 'z', 'Z', 'C', '6027', '2363']
Example Output: 79412501A

Example Input: 1, 3, ['U', '1175', 'm', 'S', 't', 's', 'o', '6357', 'G', 'x', 'H', '8917']
Example Output: m1175U

Example Input: 1, 3, ['u', 'D', '6391']
Example Output:
6391Du