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.

[EX Q]: 3, 11, ['V', '9869', 'f', 'X', '3395', 'k', 'B', '6407', 'J', 'Y', 'B', '5067', '4041', 'g', '5145', '8983', 'o', 'D']
[EX A]: BYJ7046Bk5933Xf

[EX Q]: 6, 27, ['p', '5559', 'b', '1087', '2763', 'j', 'U', 'N', '7099', '3001', 'x', 'Y', '1631', '2729', '7503', 'I', '8149', 'm', 'M', 'n', 'H', 'F', 'E', '9513', '8697', 'H', 'e', '5691']
[EX A]: eH79683159EFHnMm9418I305792721361Yx10039907NUj

[EX Q]: 1, 10, ['V', '6391', '8621', '1989', '4669', 'I', 'a', 'S', 'Q', '6699', 'L', '2001', '6231', 'L', '4403', 'g', 'h', '1153', 'P']
[EX A]:
9966QSaI9664989112681936V