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, 7, ['3595', '6583', '1997', 'c', 'h', '3505', 'j', 'H', 'b', '2551', 'Y', '5291', '253', '2467', '3489', 'W', 'R']
Example Output: j3505hc

Example Input: 19, 20, ['x', '6239', 'D', 'l', 'Y', 'd', '6405', 'l', '2629', '4743', '8271', '3749', 'W', 'r', '9153', '2941', '6477', '2623', 'F', 'J']
Example Output: JF

Example Input: 1, 4, ['C', '7211', 'b', '1435', '4245', '2203', 'x']
Example Output:
1435b7211C