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.

9, 12, ['8329', '2479', '5903', '7277', 'm', 'E', 'j', '6243', '6729', 'O', '271', 'M', '5955', 'P', '9', 'D', '2701', '7197', '3137', 'y', '7811', 'L']
M271O6729

10, 13, ['n', '6747', '2749', 'r', '943', '8729', 'a', 'G', '2181', 'U', '1385', 'p', '2739', '9649']
2739p1385U

5, 21, ['e', 'j', '3607', '4541', '2251', '5041', 'f', '5105', 'l', '4361', 'Q', 'm', 'I', 'f', 'I', 'x', '1719', '7249', '8875', '9765', '6931', '583']

69319765887572491719xIfImQ4361l5105f50412251