(28, 8)
          ( 4 )

(18, 27)
          (    )

(40, 72)
          (    )

(16, 4)
          (    )

(48, 8)
          (    )

(16, 18)
          (    )

(6, 21)
          (    )

(12, 3)
          (    )

(12, 4)
          (    )

        +[    ]

(12, 9)
          (    )

(25, 35)
          (    )

(4, 36)
          (    )

(12, 30)
          (    )

(8, 14)
          (    )

(10, 20)
          (    )

(5, 30)
          (    )

(8, 2)
          (    )

(70, 60)
          (    )

        +[    ]

(30, 25)
          (    )

(18, 45)
          (    )

(18, 4)
          (    )

(32, 56)
          (    )

(16, 8)
          (    )

(27, 36)
          (    )

(18, 21)
          (    )

(50, 30)
          (    )

(12, 6)
          (    )

        +[    ]

(27, 3)
          (    )

(16, 10)
          (    )

(64, 40)
          (    )

(27, 15)
          (    )

(27, 18)
          (    )

(25, 30)
          (    )

(33, 88)
          (    )

(70, 50)
          (    )

(32, 36)
          (    )

        +[    ]

(30, 35)
          (    )

(81, 45)
          (    )

(21, 24)
          (    )

(18, 10)
          (    )

(54, 9)
          (    )

(77, 66)
          (    )

(18, 3)
          (    )

(72, 8)
          (    )

(21, 15)
          (    )

        +[    ]

  ++[[       ]]

(28, 8)
          ( 4 )
(18, 27)
          ( 9 )
(40, 72)
          ( 8 )
(16, 4)
          ( 4 )
(48, 8)
          ( 8 )
(16, 18)
          ( 2 )
(6, 21)
          ( 3 )
(12, 3)
          ( 3 )
(12, 4)
          ( 4 )
        +[    ]

(12, 9)
          ( 3 )
(25, 35)
          ( 5 )
(4, 36)
          ( 4 )
(12, 30)
          ( 6 )
(8, 14)
          ( 2 )
(10, 20)
          ( 10 )
(5, 30)
          ( 5 )
(8, 2)
          ( 2 )
(70, 60)
          ( 10 )
        +[    ]

(30, 25)
          ( 5 )
(18, 45)
          ( 9 )
(18, 4)
          ( 2 )
(32, 56)
          ( 8 )
(16, 8)
          ( 8 )
(27, 36)
          ( 9 )
(18, 21)
          ( 3 )
(50, 30)
          ( 10 )
(12, 6)
          ( 6 )
        +[    ]

(27, 3)
          ( 3 )
(16, 10)
          ( 2 )
(64, 40)
          ( 8 )
(27, 15)
          ( 3 )
(27, 18)
          ( 9 )
(25, 30)
          ( 5 )
(33, 88)
          ( 11 )
(70, 50)
          ( 10 )
(32, 36)
          ( 4 )
        +[    ]

(30, 35)
          ( 5 )
(81, 45)
          ( 9 )
(21, 24)
          ( 3 )
(18, 10)
          ( 2 )
(54, 9)
          ( 9 )
(77, 66)
          ( 11 )
(18, 3)
          ( 3 )
(72, 8)
          ( 8 )
(21, 15)
          ( 3 )
        +[    ]

  ++[[       ]]