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: 4, 8, ['4079', 'D', '4351', '6615', 'W', 'Q', '4391', 'u', '3247', '2111', 'A', '6047', 'L', 'B', '6711']

6615WQ4391u