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: 21, 24, ['O', '6081', 'T', '5983', '749', '5403', 'j', 'a', 't', '7113', 'G', 'b', '7399', 'J', 'b', '4441', '1111', 'G', 'D', '6621', '7615', 'Z', 'f', 'a']

7615Zfa