In this task, you are given inputs i, j, and A, where i and j are integers and A is a list. You need to find all elements of A from the ith element to the jth element, reverse the order in which they occur, and then concatenate them to output the resultant 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 concatenate the elements and then reverse the string.

Ex Input:
3, 10, ['L', 'r', 'w', 't', 'T', '1931', 'q', '5649', 'Q', '7981', '6473', '1575', '6915', 'G', 'S', '9503', 'a', 'S', '4387', 'p', 'w']

Ex Output:
7981Q5649q1931Ttw


Ex Input:
4, 9, ['a', 'B', '1855', '5817', '437', 'Y', '7959', '2203', 'b', '945', '2861', 'F', '6725']

Ex Output:
b22037959Y4375817


Ex Input:
2, 2, ['E', 'J', '4671', 't', '9537']

Ex Output:

J