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, 20, ['4149', 'y', 'S', 'Z', '4189', 'v', 'w', 'a', '729', '7891', 'G', 'B', 'f', 'i', '491', '4393', 'U', 'V', 'h', 'A', '5889', '4601', '5263']

ySZ4189vwa7297891GBfi4914393UVhA