(_ 6 6) (4 3 _ 7) (6 3 3 _) (6 _ 4) (_ 1 6 8 5) (13 _ 2 10) (3 2 _ 8) (8 7 4 _) (12 6 _) (5 _ 6 12) (2 _ 3) (4 5 10 _)
(4 4 _ 4)