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, 6, ['9431', '6731', 'A', '5153', 'K', '1567', 'D', 'Y', 'a', 'q', 'x']

Output: 7651


Input: Consider Input: 18, 23, ['1833', 'M', '3301', '6669', 'K', '7747', 'c', 's', 'd', '6435', 'x', 'Y', '2879', 'R', 'Q', 'R', 'O', 'M', 's', 'd', 'y', '5379', '647', 's', '6155', 'k']

Output: 7469735ydsM


Input: Consider Input: 5, 19, ['8743', '3081', '8475', 'p', '3929', 'F', '1055', 'W', '9617', 'Z', '9717', '9033', '3903', 'U', '1049', 'I', 'm', 'l', 'k', 'H', '1673', '5691', 'q', '3193', '6957', 'M', '3595']


Output: klmI9401U309333097179Z7169W5501F9293