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: 11, 18, ['b', 'W', 'G', '3647', '1315', '8851', 'q', 'x', '785', '8375', '1509', 'D', 'g', '3797', '7267', '7903', '3505', '5169', '9479', '959', '8999', 'Z']

1509Dg37977267790335055169