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, 2, ['w', '5569', '6229', 'b']

Ex Output:
9655


Ex Input:
2, 3, ['N', 'U', 'D', 'm', '9001', 'I', '2675', 'l', '2771', 'U', '1181', 'U']

Ex Output:
DU


Ex Input:
1, 3, ['4731', '8211', 'g', 'c', '2937', '2503', 'G', '7797', '1519', '7457', '8323', '1677', 'j', 'K']

Ex Output:

g11281374