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:
3, 8, ['s', '8395', '7689', 'x', 'P', '5953', 'X', 'D']

Ex Output:
DX3595Px9867


Ex Input:
11, 13, ['h', 's', 'Q', '9071', 'x', 'G', 'G', '1815', '51', 'N', '3541', '1393', '939', '6351', 'w', 'v', '8171']

Ex Output:
93939311453


Ex Input:
11, 14, ['n', '3117', 'A', 'X', 'J', 'u', '983', 'N', 'G', 'N', '5919', 't', '7133', 'H']

Ex Output:

H3317t9195