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, 26, ['6109', '2187', 'N', 'y', 'k', 'E', 'C', '1763', '4913', '4949', 'M', '3951', 'Q', '643', '2627', '3365', 'Z', '7159', '2751', '8781', 'v', 'a', '2017', 's', '937', 'r', 't']

r937s2017av878127517159Z33652627643Q3951M49494913