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: 12, 23, ['B', '5373', 'p', '6675', '2769', '2613', 'F', '1271', 'h', '3781', '8093', '831', 'm', 'z', 'O', 'F', '2535', '8049', '625', 'T', '2721', '2129', 'k', '2963']

831mzOF25358049625T27212129k