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 Input:
6, 7, ['753', '4657', 'h', '13', '593', 'I', '7689', '717']

Ex Output:
9867I


Ex Input:
2, 17, ['4379', 'I', '2897', 't', 'H', 'W', 'z', 'i', 'f', 'b', '2901', '9357', 'c', 'Y', 'R', '2757', 'J', '9265', 'I', 's', 'j', '2617', 'q', 'a']

Ex Output:
J7572RYc75391092bfizWHt7982I


Ex Input:
3, 7, ['981', 'g', '6791', '7987', 'h', 'd', '8059', 'v', '7141', 'O', '6493', 'P', '91', 'f', '6759', '6071', '661', 'J', '4577', '9223']

Ex Output:

9508dh78971976