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: 9, 16, ['R', 'l', '6927', '1613', '6877', 'x', '6311', 'V', '5017', 'R', 'O', '2671', '7655', 'P', 'W', '1583', 'U']

1583WP76552671OR5017