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, 9, ['T', '7697', '5125', 'Q', 'j', '9397', '4161', '9593', '6887', 'j', 'I', 'E']

Answer: 6887959341619397jQ51257697T


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

Answer: X69394147


Question: 17, 21, ['173', 'u', '4103', 'g', 'U', '7753', 'H', '5271', 'T', '9339', 'r', 'U', '7277', '1555', '7647', '2063', 'U', 'P', '409', '3777', '1605', 'L', 'o', '7659', '1819', 'f', '9129', 'x', 'l']

Answer:
16053777409PU