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: 2, 4, ['9669', '8783', '8485', 'w', 'U', '4489', '1573', '6015', 'p', '1533', 'X', '3123', 'y', 'X', '4921', 'p', 'K', '9841', '8639', '1953']
Example Output: w84858783

Example Input: 8, 18, ['O', 'a', 'w', 'f', 'E', 'u', '1205', '3349', '9805', 'M', 'Z', '5239', 'u', '203', '9193', '8629', '3209', 'v', 'b', '9661', '1039', '251', '1863', 'b']
Example Output: v320986299193203u5239ZM98053349

Example Input: 3, 3, ['3403', '4975', '145']
Example Output:
145