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, 16, ['2479', 'F', '5727', '3779', '5749', '4677', 'o', 'P', 'e', '2433', 'z', '3789', 't', 'L', 'I', 'V', 'Z', 'o', 'u', '1209', 'q']
[EX A]: VILt9873z3342ePo7764947597737275

[EX Q]: 2, 6, ['6717', '6639', 'l', 'i', 'o', '1819']
[EX A]: 9181oil9366

[EX Q]: 11, 30, ['143', 'V', '2641', 'Y', '9963', 's', '5449', 'W', 'C', '4865', '5611', 'a', '8525', '9225', 'Y', '8675', '5745', '3735', 'W', 'R', 'u', 'H', '1879', 'q', 'S', '8225', '8069', '6439', '277', '7061']
[EX A]:
1607772934696085228Sq9781HuRW537354755768Y52295258a1165