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: 14, 18, ['Y', 'G', '689', '4107', 'j', '7397', 'L', 'M', 'Z', 'D', 'n', '4407', '3469', '3339', '2129', 'a', 'b', 'N', '487']

33392129abN