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, 15, ['5997', '2005', '8529', 'j', 'T', '9729', 'T', 'm', '357', '779', '2253', '725', 'z', '4149', '2913', '8135', 'Q', 'B']

Ex Output:
31929414z5273522977753mT9279Tj925850027995


Ex Input:
3, 14, ['R', 'S', '8031', '5461', 'g', '3405', '2185', '7737', '8757', 'A', 'e', 'C', 'r', '7035', '4573', 'i', 'z', 'I', 'x', 'P', '7753', '107', 'l', 'Q', '6223', 'B', '1721']

Ex Output:
5307rCeA7578737758125043g16451308


Ex Input:
1, 5, ['P', 'K', 'E', 'v', '7', '6279', '1133', 'f', 'V', 'L', 'N', 'I']

Ex Output:

7vEKP