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: 19, 20, ['v', 'l', 'R', 'H', '6753', 'b', 'r', 'S', '209', 'n', 'p', '9159', 'S', 'Q', '2107', 'J', '9757', 'F', 'N', '615', 'S']

N615