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.
--------
Question: 3, 7, ['169', '1947', 'i', 'w', '8871', '9759', '5389', '3353', 'N', 'v', '665', 'R', 'q', '2323', 'd', 'N', '4211', 'A', 'A', '9571', '1129', 'W']

Answer: 538997598871wi


Question: 9, 18, ['K', 'z', 'N', 'M', 'C', '4085', 'Y', 'T', 'J', 'T', 'B', '1671', '1083', '2961', 'T', 'b', '5905', 'U', '6817', 'K', '9291', 'O']

Answer: U5905bT296110831671BTJ


Question: 5, 5, ['r', 't', 'u', '7431', '1397', 'i', 'L', 'T']

Answer:
1397