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]: 7, 8, ['4367', '4367', 'm', '5681', '931', '9039', '8313', '6335', 'w', 'd', 'V', '1741', '1703', 'I', 't', 'a', 'P', 'P', 'x']
[EX A]: 53363138

[EX Q]: 7, 9, ['s', '3175', '1431', 'a', 'u', '7265', 'N', 'H', '1217', 'x', 'u', 'a', 'c', 'n', 'b', 'J', 'B', '6907', 'D', '6691', 'N', '7959', 'm']
[EX A]: 7121HN

[EX Q]: 2, 23, ['8527', 'V', 'E', '9021', 'z', '2787', '2513', '2413', 'd', 'U', '5161', 'M', 'C', '879', 'm', '6597', 'B', 'J', '4307', 'X', 'E', '4335', 'T', 'a', 'W']
[EX A]:
T5334EX7034JB7956m978CM1615Ud314231527872z1209EV