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]: 1, 2, ['A', '8103', '7829']
[EX A]: 3018A

[EX Q]: 2, 2, ['4359', 'G', 'A']
[EX A]: G

[EX Q]: 5, 8, ['3809', '5961', 'x', 'D', 'c', 'Z', 'i', '6533', 'e', 'E', 'C', 'l', 'z', '1449', 'C']
[EX A]:
3356iZc