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: 4, 6, ['5237', 'U', '7073', 'K', 'R', 'g', 'D', '17', 'I', '3039']

Answer: gRK


Question: 2, 4, ['i', '4995', '8615', 'O']

Answer: O86154995


Question: 6, 11, ['P', 'M', 'L', 'b', 'G', '8557', '3643', '9569', 'q', '8887', '5921', 'L', '115', '2507']

Answer:
59218887q956936438557