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: 6, 15, ['l', '5771', '9063', '4397', 'i', 'K', '7517', '4611', 'P', '3207', '4247', '2779', 'k', 'K', 'r', 's']

K75174611P320742472779kKr