In this task, you are given inputs 'i', 'j', and A, where 'i' and 'j' are integers and A is a list. A list is shown by two brackets and comma-separated numbers and characters inside, like ['1', '12', 'l']. You need to concatenate all elements of A from the ith element to the jth element, and then reverse the resulting 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 reverse first and then concatenate.

[Q]: 7, 9, ['s', '3175', '1431', 'a', 'u', '7265', 'N', 'H', '1217', 'x', 'u', 'a', 'c', 'n', 'b', 'J', 'B', '6907', 'D', '6691', 'N', '7959', 'm']
[A]: 7121HN


[Q]: 15, 16, ['4531', 'a', 'I', 'W', '1071', '1301', 'v', 's', '3521', '7203', '1157', 'w', '7201', 'a', 'I', 'z', 'V', 'X', 'j']
[A]: zI


[Q]: 26, 30, ['5911', 'V', 'R', '4871', 'L', 'g', '4977', 'H', 'm', 'Q', 'v', '1155', 'q', '1621', 'H', '599', '1937', '3577', 'q', 'b', '8751', 'y', 'v', 'e', '2737', 'U', 'X', '1535', '4763', '1347']
[A]:
743136745351XU