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: 3, 14, ['7859', 'q', '6797', 'G', 'u', '9891', '9103', '643', '603', 'F', 'e', '5437', 'D', 'q', '1927', '9083', '623', '9833', 's', 'k', '7507', '6747', 'o', 's']

qD5437eF60364391039891uG6797