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: 6, 21, ['2545', '1669', 'T', 'h', '2789', '2441', 'T', 'G', 's', 'Z', '1787', '3061', '3531', 'R', 'i', '8347', '1929', '7765', '7807', 'K', '8911', '4693', '2301']

2441TGsZ178730613531Ri8347192977657807K8911