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.

Input: Consider Input: 6, 7, ['2289', '1015', 'T', 'e', '4499', 'J', 'B', '5107', 'x', '3103', 'Q', 'Z', 'H']

Output: BJ


Input: Consider Input: 2, 2, ['G', 'S']

Output: S


Input: Consider Input: 9, 11, ['4637', 'i', 'X', 'W', '3699', 'y', '5351', '7983', 'u', '5489', '995', 'M', '573', '1429', '559', '8389', '9485', '5089', '8453']


Output: 5999845u