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: 7, 12, ['5269', '8059', '6189', '5469', 'D', 'Q', 'C', '8547', 'I', '37', '5495', '6909', 'H', 'H', 'V', '7219', '6235', 'f']
Example Output: 6909549537I8547C

Example Input: 1, 7, ['6177', '2355', 'z', 'f', 'Y', '5807', '5807', 'k', '6209', 'g', 'Z', 'r', 'E']
Example Output: 58075807Yfz23556177

Example Input: 14, 18, ['3649', 'm', '4381', 'B', 'k', 'Y', '8439', 'i', 'D', '8949', '21', 'O', 'u', 'O', 'E', 'W', 'L', '4905', '3877']
Example Output:
4905LWEO