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.

Example Input: 1, 6, ['m', '6947', '9549', '8715', 'R', 'h', 'z']
Example Output: hR871595496947m

Example Input: 1, 2, ['W', 'I', 'f', 'R', '7797', 'R']
Example Output: IW

Example Input: 10, 16, ['K', 'r', 'C', 'P', 'l', '8417', '2851', 'f', 'U', 'k', '1529', '4131', '5467', 'U', 'I', 'O', 'v', '7887', '3387']
Example Output:
OIU546741311529k