Definition: 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.
Input: 16, 20, ['a', 'z', '8793', '8709', 'J', '4517', 'j', '9029', '9745', '7569', 'A', 'z', 'b', 'I', '5625', '8641', 'y', '8285', 'h', '3269', 'r', 'n', 'D', 'R', '6985', '777', '1587', 'D']

3269h8285y8641