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: 10, 20, ['9695', 'I', '5457', 'M', 'V', '7993', 'B', 'b', 'u', 'H', '7805', '3431', '6839', '3687', '8261', 'U', 'a', 'W', '9437', 'q', 'l']
Example Output: q9437WaU82613687683934317805H

Example Input: 3, 7, ['3935', '2067', 'b', 'i', '5417', 'W', '2201']
Example Output: 2201W5417ib

Example Input: 1, 3, ['3521', '4285', '33', '1907']
Example Output:
3342853521