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:
9, 13, ['9007', '2291', '1683', 'f', 'k', 'K', '6167', 'l', 'v', 'a', '2959', 'u', 's', '5411', 'f', 's', 'I', '2725', 'k', 'D']

Ex Output:
su9592av


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:
3, 23, ['641', 'v', '1331', 'x', 'K', 'J', 'n', '9319', '2403', '1281', '7251', 'B', 'J', 'u', '3719', 'f', 's', 'P', 'L', 'T', '1129', '4163', '8449', 'e', '8539', 'L', '6217']

Ex Output:

944836149211TLPsf9173uJB1527182130429139nJKx1331