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.

Input: Consider Input: 1, 3, ['u', 'D', '6391']

Output: 6391Du


Input: Consider Input: 2, 2, ['q', '7821', '8915', '3339', 'j', 'E', '9323', 'u', '5175']

Output: 7821


Input: Consider Input: 12, 14, ['T', '9849', 'W', 'D', '925', 'q', '6677', 'X', '1753', '7897', 'B', 'U', 'P', 'K', 'V', '6727', '43']


Output: KPU