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]: 8, 16, ['O', 'e', '5857', '6759', '9787', 'e', 'j', '9173', 's', '4135', 'j', 'I', 'g', 'f', '2129', 'n', '3337']
[A]: n2129fgIj4135s9173


[Q]: 7, 29, ['F', 'p', '7849', '4023', '3495', '6251', 'W', 'U', 'G', '2131', 'p', '7629', 'Z', 'y', 'D', 'c', '9707', '7439', '8509', '805', '6503', 'z', '2581', '2039', '973', '4895', '6855', '4817', 'T', 'U']
[A]:
T48176855489597320392581z6503805850974399707cDyZ7629p2131GUW