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: 2, 4, ['9669', '8783', '8485', 'w', 'U', '4489', '1573', '6015', 'p', '1533', 'X', '3123', 'y', 'X', '4921', 'p', 'K', '9841', '8639', '1953']

Output: w84858783


Input: Consider Input: 5, 5, ['821', '1417', 'r', '9267', 's', '8093']

Output: s


Input: Consider Input: 6, 7, ['2831', 'A', '7207', 'g', '45', 'm', '575', '7377', '8929', 'b']


Output: 575m