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: 5, 18, ['c', 'r', 'H', '8181', '8047', '6667', 'r', 'l', 'r', 'S', '3747', '635', 't', 'h', 'm', 'v', 'e', '3399', 'z', '161', 'J', 'i', '2639']

80476667rlrS3747635thmve3399