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: 12, 18, ['W', '9509', '3541', 'T', 't', 'Y', 'x', '9667', 'V', '7605', '7727', 'x', 'x', 'W', '3657', '2591', '9599', 'I', 'd', '6679', '1373', 'e', '6173', '8861', 'n', 'L', '5093', 's', '453']

Answer: I959925913657Wxx


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: 3, 21, ['5869', 'T', 'R', 'u', 'U', '1365', 'V', 'W', 'v', '3553', '1195', '8801', 'J', '5313', 'Q', '5461', '6401', '2819', '2379', 'E', 'Y', '8483']

Answer:
YE2379281964015461Q5313J880111953553vWV1365UuR