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: 8, 9, ['u', 'Q', '8585', 'k', '4663', 'X', 'k', 'f', 'e', '8849']

Output: ef


Input: Consider Input: 3, 4, ['109', 'U', '6833', '6807', '4937', '7119', 'q', 'V', '5647', 'H', 'A', 'Y', 's', '3723']

Output: 68076833


Input: Consider Input: 5, 12, ['2327', 'V', '6889', '8931', 'v', '4765', '9633', '1595', '8401', 'h', 'X', '8063', 'z', '5399', '4143', 'l', '6441', '6207', '2357', 'd']


Output: 8063Xh8401159596334765v