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, 2, ['8679', 'G', '1819']

Output: G


Input: Consider Input: 3, 6, ['6843', '7805', 'h', '9097', 'O', 'u']

Output: uO7909h


Input: Consider Input: 2, 2, ['3993', 'z']


Output: z