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: 4, 11, ['U', '8011', 'E', '7569', 'J', 'i', 'O', 'r', '3197', '7111', '9393', 'z', '71', 'N', '2755', '8737', 'n', '1645', '135', '4025', '8519', 'x', 'O']

939371113197rOiJ7569