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: 6, 7, ['J', '701', 'm', '8837', 'b', 'd', '5911', 'y', '8031']

Answer: 1195d


Question: 1, 7, ['j', 'P', '5633', 'g', 'z', '3163', '8849', '1267', '1157', '6987', '9743']

Answer: 94883613zg3365Pj


Question: 12, 17, ['2581', 'E', 'c', 'A', '9547', '2185', '1723', 'a', '3117', '2435', 'd', 'q', 'c', 'N', 'N', 'B', 'P', 'o', '3107', 'f']

Answer:
PBNNcq