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.

Example Input: 1, 2, ['6729', 'z']
Example Output: 6729z

Example Input: 1, 3, ['K', '7169', '2913', '8631', 'g']
Example Output: K71692913

Example Input: 7, 13, ['P', 'K', '1519', 'W', 's', 'W', '2299', 'r', '3361', 'W', '7983', '6489', '3417', '6515']
Example Output:
2299r3361W798364893417