(45, 18)
          ( 9 )

(40, 32)
          (    )

(48, 54)
          (    )

(20, 50)
          (    )

(16, 56)
          (    )

(20, 10)
          (    )

(20, 28)
          (    )

(36, 42)
          (    )

(12, 9)
          (    )

        +[    ]

(27, 21)
          (    )

(10, 4)
          (    )

(8, 20)
          (    )

(10, 18)
          (    )

(9, 18)
          (    )

(77, 99)
          (    )

(56, 16)
          (    )

(40, 48)
          (    )

(12, 28)
          (    )

        +[    ]

(21, 15)
          (    )

(44, 99)
          (    )

(45, 25)
          (    )

(36, 28)
          (    )

(15, 6)
          (    )

(16, 56)
          (    )

(16, 36)
          (    )

(20, 16)
          (    )

(28, 24)
          (    )

        +[    ]

(72, 32)
          (    )

(33, 55)
          (    )

(15, 35)
          (    )

(30, 20)
          (    )

(35, 30)
          (    )

(6, 21)
          (    )

(30, 80)
          (    )

(3, 27)
          (    )

(10, 4)
          (    )

        +[    ]

(36, 81)
          (    )

(7, 42)
          (    )

(28, 16)
          (    )

(40, 5)
          (    )

(16, 10)
          (    )

(4, 16)
          (    )

(4, 12)
          (    )

(3, 24)
          (    )

(45, 72)
          (    )

        +[    ]

  ++[[       ]]

(45, 18)
          ( 9 )
(40, 32)
          ( 8 )
(48, 54)
          ( 6 )
(20, 50)
          ( 10 )
(16, 56)
          ( 8 )
(20, 10)
          ( 10 )
(20, 28)
          ( 4 )
(36, 42)
          ( 6 )
(12, 9)
          ( 3 )
        +[    ]

(27, 21)
          ( 3 )
(10, 4)
          ( 2 )
(8, 20)
          ( 4 )
(10, 18)
          ( 2 )
(9, 18)
          ( 9 )
(77, 99)
          ( 11 )
(56, 16)
          ( 8 )
(40, 48)
          ( 8 )
(12, 28)
          ( 4 )
        +[    ]

(21, 15)
          ( 3 )
(44, 99)
          ( 11 )
(45, 25)
          ( 5 )
(36, 28)
          ( 4 )
(15, 6)
          ( 3 )
(16, 56)
          ( 8 )
(16, 36)
          ( 4 )
(20, 16)
          ( 4 )
(28, 24)
          ( 4 )
        +[    ]

(72, 32)
          ( 8 )
(33, 55)
          ( 11 )
(15, 35)
          ( 5 )
(30, 20)
          ( 10 )
(35, 30)
          ( 5 )
(6, 21)
          ( 3 )
(30, 80)
          ( 10 )
(3, 27)
          ( 3 )
(10, 4)
          ( 2 )
        +[    ]

(36, 81)
          ( 9 )
(7, 42)
          ( 7 )
(28, 16)
          ( 4 )
(40, 5)
          ( 5 )
(16, 10)
          ( 2 )
(4, 16)
          ( 4 )
(4, 12)
          ( 4 )
(3, 24)
          ( 3 )
(45, 72)
          ( 9 )
        +[    ]

  ++[[       ]]