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: 9, 12, ['Z', '323', '4175', 'm', '9067', 'P', 'P', '2863', '4777', 'z', 'b', '6539', 's', 'u', '5943', '8993', 'A', 'B', 'W', '1903', '4861', '8683', 'z', '2181', 'M']

6539bz4777