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: 9, 17, ['C', '3381', '8891', 'F', '8151', '3155', '2719', 'H', '857', 'r', 'G', '1783', 'r', 'B', '1551', 'z', 'p']

857rG1783rB1551zp