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:
5, 6, ['9891', '9721', 'q', 'u', '8721', 'l', 'm', 'p']

Ex Output:
l8721


Ex Input:
1, 12, ['H', '7185', 'R', 'N', '489', '6499', 'L', '8809', '7041', '9267', 'o', 'r', '1423', '6103']

Ex Output:
ro926770418809L6499489NR7185H


Ex Input:
3, 11, ['4387', '5341', 'T', '2123', '5197', 'j', '6259', 'l', '4119', 'K', 'S', '2543', 'l', 'w']

Ex Output:

SK4119l6259j51972123T