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]: 4, 5, ['3001', '661', 'S', 'N', '7919']
[EX A]: 9197N

[EX Q]: 3, 4, ['435', 'K', '8051', '7159']
[EX A]: 95171508

[EX Q]: 23, 24, ['1641', 'p', '2425', '895', 'p', 'E', 'Y', 'q', '6051', '3989', 'j', 'z', '9329', '6021', '1045', '5231', 'c', 'Z', '3777', 'f', '375', 'G', 'o', '1523', 'C', '7401', 'J']
[EX A]:
3251o