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: 27, 30, ['5597', 'd', 'R', '9463', '5187', '3625', 'x', 'c', '4851', '435', '5719', 's', '2797', '1659', '2379', 's', '8761', 'F', '5895', '4479', 'j', '6487', 'U', 'I', 'p', 'P', '1493', '7893', 'w', 'C']

Answer: Cw39873941


Question: 10, 13, ['K', '6565', 'A', '5073', '1249', '2817', '3663', '3799', 'G', '2707', '3405', '5999', '5577', 'c', 'p', 'V', '8373', 'e', 'W', '5977', 's', 'p', 'E', '5425']

Answer: 7755999550437072


Question: 17, 18, ['6775', 'M', 'W', 'u', '7721', '4393', 'J', 't', '7769', '897', '2501', '1535', 'W', 'Z', '2563', '1159', '9009', 'l', '6483', 'F', 'I', 'M', 'r', 'X']

Answer:
l9009