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, 6, ['X', '939', 'u', 'V', 'Z', 'x', 't', '5703', '5669', 'z', 'D', '7013', '9807', 'N', 's', '5075', 'd', 'T', '1275', '1475', 'r', 'k']

Ex Output:
x


Ex Input:
6, 7, ['J', '701', 'm', '8837', 'b', 'd', '5911', 'y', '8031']

Ex Output:
1195d


Ex Input:
1, 17, ['P', 'w', 'A', 'A', '2245', 'k', '7785', 'y', '4971', '6499', 'L', 'k', '5915', '3219', '3407', '357', '8133']

Ex Output:

3318753704391235195kL99461794y5877k5422AAwP