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: 6, 8, ['K', '5485', '8025', '4985', 's', 'P', '8169', '995', '6439', '5061', '4699', '4167', '1657', 'G', 'q', '3967', '4771', 'M']

9958169P