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: 2, 2, ['a', '6541']
Example Output: 6541

Example Input: 1, 9, ['O', '2627', 'M', '7201', '8401', 'Y', 'H', '9125', '3767']
Example Output: 37679125HY84017201M2627O

Example Input: 1, 2, ['H', 'U']
Example Output:
UH