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.
13, 18, ['n', 'v', '3251', 'X', 'S', '5541', '6209', 'k', '9435', 'J', '1829', '6911', 'o', '8199', 'n', 'w', '5999', 'k', 'Q', '9539']