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: 5, 15, ['l', 'C', '4179', 'X', '2729', 'm', 'P', '1499', '4327', 'E', '6561', '8663', '8683', '8809', 'S', '6287', 'D', 'U', '2277', '171']

2729mP14994327E6561866386838809S