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]: 12, 20, ['869', '6009', 'Y', '8839', 'j', 'Q', '4485', 'V', 'p', '6129', '4495', '5839', 's', 'B', 'I', 'h', 'q', '6895', '8297', 'A', '8809']
[A]: A82976895qhIBs5839


[Q]: 2, 2, ['e', '4827']
[A]: 4827


[Q]: 3, 3, ['6619', 'A', '8223', 'i', '9743', '7449', 'T']
[A]:
8223