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: 14, 15, ['8353', '4081', '2937', '2401', 'b', 's', '7973', 'W', '4593', '5265', 'm', 'U', '1455', '7493', '4787', 'r', '1541', 'L']

47877493