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: 1, 18, ['4729', '2591', '5309', 'L', 'F', '4977', 'I', 'E', '189', 'g', 'T', '3251', 'O', 'Z', '511', 'd', 'L', 'w']

Output: wLd115ZO1523Tg981EI7794FL903519529274


Input: Consider Input: 8, 9, ['2123', 'O', '2505', 'd', '5435', '2145', '8281', 'b', 'v', '6485', '2349', '8739', '8459', 'O', 'h', '8279', 'L', '8345', 't', 'T', '5075', '7295', 'X']

Output: vb


Input: Consider Input: 2, 3, ['9959', '695', 'O', 'P', '9695', 'W']


Output: O596