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, 13, ['D', '8679', 'd', 'l', 'N', 'Z', '221', 'b', '4023', 'U', 'W', 'C', 'f', '9805', 'U', 'v', 'y', 'U']

lNZ221b4023UWCf