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.
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Question: 2, 5, ['f', 'd', '2691', 't', 'u']

Answer: ut1962d


Question: 14, 15, ['3351', '8899', 'M', 'm', '2939', 'e', '1681', '9189', 'b', 'j', 'L', '1927', '2855', '2993', 'F', 'P', '3261', '3185', 'U', '8887', 'M', '9865']

Answer: F3992


Question: 7, 9, ['9199', '9203', '4585', 'j', 'X', '611', 'w', '2609', 'N', '6347', 'Q', '4545', '355', 'v', '7295', 'Z', '5517', '2933', '3841', 'Y', 'A', 'h', '9203', 'S', 'U', '7', '3121', '2379', 'b', 'W']

Answer:
N9062w