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, 2, ['7921', 'Q']

Output: Q7921


Input: Consider Input: 3, 5, ['m', 'U', '3235', 'B', '2015']

Output: 2015B3235


Input: Consider Input: 1, 2, ['x', '6259', '465', 'e', '8355', '6031', 'Y', 'I']


Output: 6259x