In this task, you are given inputs i, j, and A, where i and j are integers and A is a list. You need to find all elements of A from the ith element to the jth element, reverse the order in which they occur, and then concatenate them to output the resultant 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 concatenate the elements and then reverse the string.
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Question: 6, 15, ['7417', 'a', '479', 'E', '1575', '6937', '4649', '9879', '9875', 'c', '1671', 'K', '3773', '6999', 'J', '9889', 'q', '4099', 'r', '1859', 'W']

Answer: J69993773K1671c9875987946496937


Question: 2, 2, ['G', '6469']

Answer: 6469


Question: 12, 22, ['y', '1433', '4909', 'F', '4335', 'e', '2859', 'W', 'u', 'r', '8391', 'W', '8855', '1899', '3559', '8269', '2457', 'X', 'C', '1581', 'T', '3663', 'n', '271', '8589', 'F']

Answer:
3663T1581CX24578269355918998855W