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.

Ex Input:
1, 4, ['j', '2349', 'V', '4879', '8473', 'X', 'C', '2769', 's', '6297', '7723', '6009', 'I', '6385', '9161', '9179', '9785', '4965', '4479', '7323', '4685', '1891']

Ex Output:
9784V9432j


Ex Input:
3, 5, ['2849', 'J', 'L', '2347', '7219', 'a', 'Q', 'U', '6865', 'O']

Ex Output:
91277432L


Ex Input:
20, 25, ['z', '4341', 'd', 'z', '323', 'Q', '9197', 'J', 'W', '463', '2865', 'Y', '7245', '5121', '7561', '1295', '2259', '7555', 'G', '8795', '4775', '2939', '1495', '7209', '227', '8739', 'x', '5027', 'f', 'd']

Ex Output:

72290275941939257745978