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]: 19, 23, ['r', '521', '2357', 'j', 'R', 'a', '4853', 'q', '2383', 'i', '8071', '3715', '7533', '1407', 'e', '9495', 'k', '3789', 'P', 'c', '2565', 'q', '4565', 'P']
[EX A]: 5654q5652cP

[EX Q]: 6, 13, ['a', 't', '3699', 'H', 'c', 'S', '2713', '5419', 'q', '7877', 'q', 'U', '833', '8411', '2003', '5373', 'P', '2913']
[EX A]: 338Uq7787q91453172S

[EX Q]: 7, 24, ['T', '2225', '1783', '9515', '5119', 'A', '1087', 'a', '1975', 'z', '5833', 'k', '1217', 'i', 'J', '2239', '2467', '5933', '683', '7005', '9811', '4399', '8353', '5597', 'W', 'V']
[EX A]:
79553538993411895007386339576429322Ji7121k3385z5791a7801