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, ['6025', 'W', '4529', 'D', '9719', '6937', '1967', 'U']
[A]: D4529


[Q]: 5, 7, ['7355', 'A', '3859', 'S', '9627', '761', 'H', 'o', 'j', '289', 'j', 'P', 'r', '8297', '8109']
[A]:
H7619627