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: 2, 4, ['5983', 'I', '9531', 'U', 'P', '1383', 'Y']

Output: U1359I


Input: Consider Input: 2, 2, ['8679', 'G', '1819']

Output: G


Input: Consider Input: 5, 7, ['D', 'Z', 's', '7877', 'C', 't', 'k', '3903', '5613']


Output: ktC