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: 10, 16, ['U', 'S', '9777', '625', 'b', '5041', 'd', 'k', 'R', '4199', 'U', 'Q', '8937', '1061', '9287', '7937']

4199UQ8937106192877937