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: 7, 20, ['981', '6473', '1031', '9495', 'F', '9207', '9187', 'G', 'x', 's', 'e', 'R', 'u', 'l', '5119', '9593', '2425', '4813', '9577', '3505', 'L', 'U', 'm', '901', '1485', '3163']

350595774813242595935119luResxG9187