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: 17, 19, ['6023', 'u', '9435', 'M', '9449', 'Z', '2603', '465', '997', '5173', '4717', '4747', '375', '9553', 's', '3647', '5889', '2549', '7853', '7099', 'M', 'l', 't', '6485', 'U', 's', '3957', '8635', '5557']

785325495889