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:
10, 13, ['3493', '8321', '8153', 'Y', 'A', 'H', 'z', 'D', 'G', '3563', 'O', '697', '7357', 'F', 'V', '515', 'a', 't']

Ex Output:
7537796O3653


Ex Input:
2, 3, ['5191', '9077', 'a']

Ex Output:
a7709


Ex Input:
17, 26, ['9041', 'r', '7427', '7447', '6321', '2575', 'G', 'a', 'i', '549', 'F', '5187', '6311', '8949', 'x', '9265', 't', '4137', 'M', '5683', 'N', '2531', 'w', '7169', 'R', 'Q', 'm', '6141']

Ex Output:

QR9617w1352N3865M7314t