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: 9, 18, ['9423', '9231', '3787', '7609', 'Y', '6459', 'V', 'a', '8997', 'l', 'r', 'b', 'u', 'K', '1891', 'm', 'b', '2389', 'O']

8997lrbuK1891mb2389