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: 17, 21, ['6979', 'G', '3143', 'h', 'z', 'J', 'y', 'c', 'i', 'c', 'V', '7705', '907', 'w', 's', '3659', '9997', '2939', 'w', '3275', '6235', '9019', '2227']

99972939w32756235