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: 3, 13, ['J', '7773', '8391', 'G', '6387', 'n', 'E', 'v', 'c', 'i', 'i', 'n', 'n', 'Z', '2661', '5289']

8391G6387nEvciinn