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: 4, 5, ['a', 'I', 'J', 'a', '9779', 'i', '7835', 'S', '5809']
Example Output: 9779a

Example Input: 1, 1, ['9543', 'z']
Example Output: 9543

Example Input: 8, 15, ['G', 't', '4775', 't', '9763', '5717', '6811', 'R', 'H', '1331', 'F', '9001', 'b', 'B', '8959', '6653']
Example Output:
8959Bb9001F1331HR