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]: 3, 3, ['2789', '6611', '5143']
[A]: 5143


[Q]: 8, 21, ['2943', 'u', '4551', 'A', '2429', 'o', 'L', '1565', 'a', 'X', '7355', 'R', 'T', '6539', '9603', '967', 'l', '1715', '3931', '5387', '7197', '435']
[A]: 7197538739311715l96796036539TR7355Xa1565


[Q]: 2, 8, ['2645', '3115', 't', '6415', '4107', 'b', '707', '9705', '2285', '2403', 'k', 'k']
[A]:
9705707b41076415t3115