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: 19, 20, ['x', '6239', 'D', 'l', 'Y', 'd', '6405', 'l', '2629', '4743', '8271', '3749', 'W', 'r', '9153', '2941', '6477', '2623', 'F', 'J']

Answer: JF


Question: 2, 8, ['9583', '3923', 'x', 'H', '7663', 'J', '4401', 'J', '3299', '137', '5981', 'r', 'r', 'm', '3333', '3283', '6973', 'r', '8917', 'g', '797', 'K']

Answer: J4401J7663Hx3923


Question: 5, 17, ['y', 'H', 'p', 'N', '5547', '7333', '3435', 'P', '1787', 'Y', '5099', 'm', 'd', '8059', '7513', '5349', '2909', 'Z', 'H', '9247', 'N', '6935', 's', 'p', 'F', '9883', 'Z', 'n']

Answer:
2909534975138059dm5099Y1787P343573335547