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: 2, 17, ['6747', '6871', 'g', '1517', 'h', 'q', 'h', '2517', 'w', '6745', 'b', 'X', 'o', '2625', 'u', '8405', '4951', '1811']

6871g1517hqh2517w6745bXo2625u84054951