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:
2, 2, ['8063', '8357']

Ex Output:
8357


Ex Input:
2, 3, ['4733', '2731', '1023']

Ex Output:
10232731


Ex Input:
4, 11, ['7195', 'e', '2053', '7341', '5105', 'S', '6839', 'q', 'R', 'T', 'Q', '5247', 'q']

Ex Output:

QTRq6839S51057341