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.

[EX Q]: 1, 13, ['1963', 'l', '8291', 'K', 'q', '5567', '5123', 'L', '6155', '1313', 'U', '9199', '8555', '7115', 'X', 'U', 'e', '8077']
[EX A]: 85559199U13136155L51235567qK8291l1963

[EX Q]: 3, 4, ['D', 'k', 'Q', '3207']
[EX A]: 3207Q

[EX Q]: 1, 2, ['5015', '2141', 'r', 'L', '865', 'Y', 'L', 'C', '9947', '5637']
[EX A]:
21415015