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: 7, 10, ['4027', '1861', 'q', '5477', 'N', '3417', 'F', 'C', 'V', 'U', 'R', 'O', '5575', '389', 'w', 'z', 't', '1083', '7865']

Answer: UVCF


Question: 4, 5, ['a', 'I', 'J', 'a', '9779', 'i', '7835', 'S', '5809']

Answer: 9779a


Question: 18, 19, ['I', '8823', '4577', 'A', 'X', '9699', '4575', 'T', 'q', 'D', 'K', 'C', '515', '3391', '3533', 'F', '1507', 'V', 'X', 'C', 'D', '9199', '8369', 'E', '53', '8589', 'u', 'J', 's', '5931']

Answer:
XV