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, 16, ['W', '2049', 'y', '2027', '4667', '8225', 'B', '189', 'J', 'V', '6239', '4983', 'o', '7901', '2139', '5687', '9889', 'v', '7443', 'd']

568721397901o49836239VJ189B82254667