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: 16, 20, ['J', '6963', '9003', 'c', 'g', '675', '6247', 'y', '4777', 'q', 'f', '1267', 'J', '6607', 'd', 'J', '3577', 'g', 'r', '8323', 'C', 'n', '9405', 'l']

J3577gr8323