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, 7, ['8123', 'G', '4941', 'Z', 'i', 'T', '3335']

Ex Output:
5333T


Ex Input:
3, 8, ['6673', '3503', 'j', 't', 'y', 'q', 'S', '2339', 'B', 'C', 'b', 'K', '3323']

Ex Output:
9332Sqytj


Ex Input:
7, 17, ['Z', 'M', '4207', '1329', 'p', '2215', '9789', 'y', '1373', 'R', '1369', '2167', '8641', 'u', 'F', 'S', 'A', 'p']

Ex Output:

ASFu146876129631R3731y9879