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 concatenate all elements of A from the ith element to the jth element, and print 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.
Input: 14, 15, ['2525', 'm', '7307', '3879', 'X', '2859', '5623', '769', 'W', 'v', '9383', 'a', '3787', '6785', 'z', '8553', 'Y', 'W', '8217', '8879', '7581', '5769']

6785z