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.
--------
Question: 4, 22, ['i', 'Y', 'D', 'I', '7775', '7615', '3411', '6273', '2707', '1501', '2947', 'O', 'E', '2715', 'T', '4975', '4001', 'H', '689', '2465', 'I', '4139']

Answer: I7775761534116273270715012947OE2715T49754001H6892465I4139


Question: 5, 6, ['5153', 'B', '2761', 'f', 'h', 'x', 'L', '383', 'H', '8921', '6251']

Answer: hx


Question: 4, 6, ['6255', '2761', 'k', '729', 'A', 'u']

Answer:
729Au