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]: 21, 28, ['8641', 'o', '1301', '8225', '8079', 'Y', 'O', '9571', 'n', 'Q', 'n', 'W', '6555', 'm', 'A', 'A', '4459', '5983', '5469', 'd', '6269', 'E', '2107', 'X', '8397', 'f', 'D', '9129']
[A]: 9219Df7938X7012E9626


[Q]: 2, 2, ['6099', 'r']
[A]: r


[Q]: 15, 17, ['4667', '6295', 'i', '9575', 'p', 'w', 'L', '6143', '9215', '987', 'r', '8801', '1111', '5699', '435', 'z', '769', '4205']
[A]:
967z534