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:
9, 18, ['K', 'z', 'N', 'M', 'C', '4085', 'Y', 'T', 'J', 'T', 'B', '1671', '1083', '2961', 'T', 'b', '5905', 'U', '6817', 'K', '9291', 'O']

Ex Output:
U5905bT296110831671BTJ


Ex Input:
3, 7, ['z', 'b', 'm', 'A', '4713', '3293', 'm', '7883']

Ex Output:
m32934713Am


Ex Input:
5, 7, ['5483', 'I', '7795', '3849', '7919', 'B', '5227', '2507', 'B']

Ex Output:

5227B7919