Definition: 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.
Input: 5, 12, ['4943', 'q', '3657', '8041', '5021', 'k', 'O', '9143', 'B', 'c', '5041', 'I', '1081', 'N', '7875', 'J', 'P', 'u', '1581']

I5041cB9143Ok5021