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: 12, 13, ['I', 'y', 'w', 'a', 'Q', 'f', '2619', 'q', 'e', '8477', 'm', 'C', '203', 'C', '7237', 'h', 'C', 'M']
Example Output: 203C

Example Input: 2, 5, ['e', '7607', '3201', '3421', 'H', '543', '3489']
Example Output: H342132017607

Example Input: 3, 11, ['6409', 'i', '6791', 'a', '6117', '619', '9765', 'i', '431', 'i', '6243', 'w', '6613', 's', '2541']
Example Output:
6243i431i97656196117a6791