1. ( -5 , -3 ) ( -4 , -5 ) ( -3 , -7 ) ( -3 , -6 ) ( -2 , -4 ) ( -1 , 0 ) LINE ENDS 2. ( -7 , 1 ) ( -8 , 4 ) ( -9 , 7 ) ( -8 , 10 ) ( -7 , 10 ) ( -5 , 9 ) ( -3 , 7 ) ( -2 , 6 ) ( 0 , 7 ) ( 2 , 6 ) ( 3 , 7 ) ( 5 , 9 ) ( 7 , 10 ) ( 8 , 10 ) ( 9 , 7 ) ( 8 , 4 ) ( 7 , 1 ) ( 3 , 4 ) ( 0 , 1 ) ( -3 , 4 ) ( -7 , 1 ) LINE ENDS 3. ( -5 , 0 ) ( -4 , 0 ) ( -2 , -1 ) ( -4 , -1 ) ( -5 , 0 ) LINE ENDS 4. ( 5 , -3 ) ( 4 , -5 ) ( 3 , -7 ) LINE ENDS 5. ( 7 , 1 ) ( 8 , -3 ) ( 9 , -7 ) ( 8 , -7 ) ( 7 , -6 ) ( 4 , -9 ) ( 1 , -10 ) ( -1 , -10 ) ( -4 , -9 ) ( -7 , -6 ) ( -8 , -7 ) ( -9 , -6 ) ( -8 , -2 ) ( -7 , 1 ) LINE ENDS 6. ( 5 , 0 ) ( 4 , -1 ) ( 2 , -1 ) ( 4 , 0 ) ( 5 , 0 ) LINE ENDS 7. ( 1 , 0 ) ( 2 , -4 ) ( 3 , -6 ) ( 3 , -7 ) ( 1 , -8 ) LINE ENDS 8. ( -4 , -1 ) ( -4 , 0 ) ( -3 , -1 ) SHADE IN LINE ENDS 9. ( -3 , -7 ) ( -1 , -8 ) ( 1 , -8 ) ( 2 , -6 ) ( 1 , -5 ) ( -1 , -5 ) ( -2 , -6 ) ( -1 , -8 ) SHADE IN LINE ENDS 10. ( 4 , 6 ) ( 7 , 9 ) ( 7 , 5 ) ( 6 , 4 ) ( 4 , 5 ) ( 4 , 6 ) SHADE IN LINE ENDS 11. ( 4 , -1 ) ( 4 , 0 ) ( 3 , -1 ) SHADE IN LINE ENDS 12. ( -7 , 4 ) ( -7 , 9 ) ( -4 , 6 ) ( -4 , 5 ) ( -6 , 3 ) ( -7 , 4 ) SHADE IN LINE ENDS LINE END​