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:
2, 4, ['4047', 'S', '4249', '1735', '207']

Ex Output:
53719424S


Ex 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']

Ex Output:
7592r1558


Ex Input:
9, 14, ['5351', 'B', '995', 'Y', 'O', 'U', 'r', 'u', 'R', 'U', 'D', 'R', 'k', '2009']

Ex Output:

9002kRDUR