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.

[Q]: 5, 21, ['J', '6557', '5301', '3201', '9347', '9131', '343', '683', 'A', 'c', '335', '6901', '4769', '6013', '4753', 'e', 'B', 'Q', '815', '9515', 'b', 'L', '8979', '8995', 'h', '479', '4793', '8573', '7739']
[A]: b9515815QBe4753601347696901335cA68334391319347


[Q]: 3, 4, ['109', 'U', '6833', '6807', '4937', '7119', 'q', 'V', '5647', 'H', 'A', 'Y', 's', '3723']
[A]: 68076833


[Q]: 4, 19, ['p', '1211', 'm', 'N', '6683', 'V', 'O', '3907', '427', 'S', '9005', 'p', 'F', 'P', 'r', 'B', '5919', 'c', 'q', 'T', '1595']
[A]:
qc5919BrPFp9005S4273907OV6683N