 (0,-0) to (0,-0); (0,0) to (0,-0) to (0,-0) to (0,-0) to (0,-0); (0,0) to (0,-0) to (0,-0) to (0,-0); (0,-0) to (0,-0); (0,-0) to (0,-0) to (0,-0) to (0,-0); (0,-0) to (0,-0); (0,-0) to (0,-0) to (0,-0) to (0,-0)