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: 1, 4, ['s', 'n', '6721', 'W', 'H']

Answer: W6721ns


Question: 14, 16, ['1911', 'u', '1355', 'M', 'K', '1179', 'd', 'k', '5233', 'j', 'c', 'G', 'C', '4147', '6939', 'X', 'y', '4461']

Answer: X69394147


Question: 12, 26, ['3889', 't', 'y', '79', '1117', 'A', '2269', '1245', 'U', 'l', '1541', 'U', '9137', '7351', 'f', 'V', 'b', 'u', '4125', 'c', 's', '1023', 'v', '3923', 'A', '8337', '2787', 'h', 'P']

Answer:
8337A3923v1023sc4125ubVf73519137U