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: 2, 16, ['o', 'N', 'O', 'D', '4639', 'F', '2135', '5569', 'l', '8721', 'm', '6431', 'Z', '8497', 'e', 'a', '7777', '281', '3857']

NOD4639F21355569l8721m6431Z8497ea