instruction:
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.
question:
4, 9, ['7691', '4539', '3381', 'b', 'g', '9615', '8187', '177', '2473', '8579', '9739', 'C', 'v', 'q', '2879', 'Z', '6817', '5247', '5477', 'Y', 'w', '3981']
answer:
247317781879615gb


question:
5, 10, ['j', '2883', '9743', '9417', 'C', '3167', 'k', '6035', '201', '8563']
answer:
85632016035k3167C


question:
16, 18, ['7535', 'p', '8987', '9399', '7415', 'a', 'K', 'm', '3045', '6731', 's', 'q', 'K', '321', 'F', '2783', 'S', '1243', '7563']
answer:

1243S2783