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, 9, ['i', '3931', '3437', '9013', 'A', '4235', 'j', '7823', '7939', 'K', 'L', '5149', 'l', '6547', 'w', 't', 'p', 't', 'Q', 'H', 'i']

393134379013A4235j78237939