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: 7, 9, ['K', '3021', '7749', 's', '4257', '9495', '4797', '807', 'H', 'X', 'E', '6585', 'C', '9061', 's', 'p', '4321', 'z']

4797807H