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: 4, 5, ['B', 'H', 'y', 'y', 'K']

Answer: Ky


Question: 5, 9, ['7453', '7415', 's', 'O', '1161', 'G', 'N', '5925', '3367', 'f', '7739', 'b', 'y', 'o', '2431', 'Y']

Answer: 76335295NG1611


Question: 15, 18, ['k', '363', 'K', '2569', '4173', '6869', '6471', '9451', '3955', '5595', 'q', '9155', 'a', 'i', '8051', '9143', '6387', '9775', '1869', 'h', '8541', 'y', '8759', 'W', '1403', '8677']

Answer:
5779783634191508