In this task, you are given inputs 'i', 'j', and A, where 'i' and 'j' are integers and A is a list. A list is shown by two brackets and comma-separated numbers and characters inside, like ['1', '12', 'l']. You need to concatenate all elements of A from the ith element to the jth element, and then reverse the resulting 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 reverse first and then concatenate.
--------
Question: 6, 19, ['1247', 'w', '6657', '3757', '9313', 'u', '5655', 'n', '9559', '4017', '9041', 'n', 'w', '155', 'C', 'N', '6351', '9761', '5701', '3857', '6167', 'u']

Answer: 107516791536NC551wn140971049559n5565u


Question: 3, 8, ['w', '7571', 'o', '235', 's', 'n', '3941', '6357', '3251', 'G', '5961', 'z', 'N', '5029', '7589', '3993', '5087', '6351', '5799', '1943', '7661', 'S']

Answer: 75361493ns532o


Question: 8, 23, ['M', 'm', '4391', 'H', 'H', 's', 'D', 'k', '6139', 'o', 'G', '6921', '8833', 'h', '6413', '5503', 'r', '8689', '3263', 'n', '5899', '4039', '7139', '643', 'M', '6483']

Answer:
931793049985n36239868r30553146h33881296Go9316k