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]: 14, 20, ['9977', 't', 'Y', 'i', '7981', 'a', '1711', '3371', '9143', '3665', '1525', 'y', 'b', '379', 'k', 'T', 'Q', 'D', 'c', '1001', '551', 'Z']
[A]: 1001cDQTk973


[Q]: 13, 14, ['5913', '6823', '5945', 'a', '8191', 's', '5405', 'l', '2515', '3901', 'R', '1575', 'e', 'P', '9231', '39', '6651', 'N']
[A]: Pe


[Q]: 10, 10, ['6039', '3015', 'F', 't', 'V', 'G', 'N', '9095', 'C', '6217', '543', 'm', 'J', '9431', 'm', '4211', '5767', 'i', '4329', 'N', 'n', '7127', 'p', 'N', '6979', '6959']
[A]:
7126