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:
22, 23, ['6391', 'M', '8905', '3769', '9675', '4113', '9237', '8809', '8731', '1409', 'k', 'g', '6187', 'w', 'V', '2261', 'G', 'V', '2539', 'E', '2319', 'P', 'm', '8553', '6411']

Ex Output:
mP


Ex Input:
3, 4, ['6865', 'A', 's', 'o', '1989', 'i', '613', 'S', 's']

Ex Output:
os


Ex Input:
2, 23, ['591', 'N', 'A', 's', 'Z', 'u', 'D', 'O', '2883', 'b', 'i', '9975', 'D', '3719', '2577', '7461', '7127', 'E', 'Z', 'K', 'W', 'g', '6011', '3651']

Ex Output:

1106gWKZE7217164777529173D5799ib3882ODuZsAN