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:
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:
9, 16, ['E', 'M', '361', '4657', '8215', '8495', '73', 'O', '1949', '8617', '7963', 'B', '4393', 'b', '5085', '1535', 'A', 't', '4831', 'v', '9665', 'Z', '7017', '4449', 'Z', 'd', 'Q', '3879', 'J', 'y']

Ex Output:
53515805b3934B369771689491


Ex Input:
12, 18, ['249', '6361', 'r', 'L', '329', 'w', 'G', 'r', 'l', 'i', 'j', 'u', 'O', '1271', '9589', '667', 'K', '7465', 'W', 'b', 'b', 'O', '4155', '2621', '8553', 'X']

Ex Output:

5647K76698591721Ou