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: 20, 22, ['4065', 'I', '7721', 'x', '8903', 'S', '8877', 'W', 'j', '1835', '6933', '549', '7799', '8789', 'c', 'M', '6183', '3319', 'h', '8551', 'r', '2957', 'o', 'W', '9497', 'j', 'g', '3619']

Output: 7592r1558


Input: Consider Input: 6, 7, ['8123', 'G', '4941', 'Z', 'i', 'T', '3335']

Output: 5333T


Input: Consider Input: 16, 21, ['t', '9883', 'J', 'J', 'i', '8623', 'K', 'd', 'H', '8081', '2013', 'z', '3307', '1523', 'B', '6861', 'R', '911', 'n', '737', 'E', 'o', 'F']


Output: E737n119R1686