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: 8, 9, ['u', 'Q', '8585', 'k', '4663', 'X', 'k', 'f', 'e', '8849']
Example Output: ef

Example Input: 4, 4, ['8943', '8643', 'z', 'P', 'q', 'v', '2799', 'm', '8201', 'e', 'j', 'r']
Example Output: P

Example Input: 6, 9, ['z', '1091', 'J', '8419', 'E', 'P', '4227', 'w', 'i', '6765', '2925']
Example Output:
iw4227P