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: 15, 17, ['P', 'H', '9731', 'A', '1807', 'D', '3331', 'N', 'K', '659', 'D', 'F', '7143', '4103', 'Y', '6599', 'm', '4721', '5975', 'F', 'o']

Y6599m