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, 6, ['U', '5099', '1125', 'U', '1693', '7717', 'P', '7679', 'E', '7747', 'D', 'Z', 'E', '4473']
Example Output: 77171693U

Example Input: 1, 4, ['O', 't', '8177', 'D']
Example Output: D8177tO

Example Input: 8, 12, ['6825', 'p', '9937', '3449', '9235', 'q', 'V', '1621', 'b', 'F', '1321', '8523', '7727']
Example Output:
85231321Fb1621