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:
8, 9, ['E', '4081', '2021', '2585', 'I', '6983', '3271', 'K', '4793', 'd', '2835', 'Q', 'T', 'f', '2133', 's', 'G', '93', 'B', 'n', 'b', 'v', 'N', 'B', '6625', 'v', 'd', '5407']

Ex Output:
3974K


Ex Input:
4, 4, ['w', '3895', '4989', '7875', 'u']

Ex Output:
5787


Ex Input:
1, 9, ['Z', 'y', '7155', 'n', '8931', 'J', '9729', 'F', 't', 'T', '7865', 'q', '5833', 't', '23', 'z', 'd', '1803', '6165', '6923', 'a']

Ex Output:

tF9279J1398n5517yZ