(56, 32)
          ( 8 )

(24, 20)
          (    )

(7, 14)
          (    )

(72, 45)
          (    )

(48, 54)
          (    )

(90, 10)
          (    )

(10, 45)
          (    )

(56, 63)
          (    )

(28, 4)
          (    )

        +[    ]

(16, 4)
          (    )

(10, 30)
          (    )

(70, 60)
          (    )

(21, 9)
          (    )

(40, 35)
          (    )

(35, 21)
          (    )

(81, 45)
          (    )

(24, 18)
          (    )

(40, 24)
          (    )

        +[    ]

(9, 72)
          (    )

(15, 6)
          (    )

(55, 77)
          (    )

(16, 28)
          (    )

(10, 50)
          (    )

(6, 18)
          (    )

(24, 4)
          (    )

(42, 35)
          (    )

(56, 32)
          (    )

        +[    ]

(2, 10)
          (    )

(10, 5)
          (    )

(25, 20)
          (    )

(48, 8)
          (    )

(27, 18)
          (    )

(90, 80)
          (    )

(15, 25)
          (    )

(6, 14)
          (    )

(70, 50)
          (    )

        +[    ]

(28, 49)
          (    )

(35, 15)
          (    )

(6, 48)
          (    )

(36, 63)
          (    )

(36, 27)
          (    )

(28, 16)
          (    )

(72, 64)
          (    )

(35, 20)
          (    )

(20, 70)
          (    )

        +[    ]

  ++[[       ]]

(56, 32)
          ( 8 )
(24, 20)
          ( 4 )
(7, 14)
          ( 7 )
(72, 45)
          ( 9 )
(48, 54)
          ( 6 )
(90, 10)
          ( 10 )
(10, 45)
          ( 5 )
(56, 63)
          ( 7 )
(28, 4)
          ( 4 )
        +[    ]

(16, 4)
          ( 4 )
(10, 30)
          ( 10 )
(70, 60)
          ( 10 )
(21, 9)
          ( 3 )
(40, 35)
          ( 5 )
(35, 21)
          ( 7 )
(81, 45)
          ( 9 )
(24, 18)
          ( 6 )
(40, 24)
          ( 8 )
        +[    ]

(9, 72)
          ( 9 )
(15, 6)
          ( 3 )
(55, 77)
          ( 11 )
(16, 28)
          ( 4 )
(10, 50)
          ( 10 )
(6, 18)
          ( 6 )
(24, 4)
          ( 4 )
(42, 35)
          ( 7 )
(56, 32)
          ( 8 )
        +[    ]

(2, 10)
          ( 2 )
(10, 5)
          ( 5 )
(25, 20)
          ( 5 )
(48, 8)
          ( 8 )
(27, 18)
          ( 9 )
(90, 80)
          ( 10 )
(15, 25)
          ( 5 )
(6, 14)
          ( 2 )
(70, 50)
          ( 10 )
        +[    ]

(28, 49)
          ( 7 )
(35, 15)
          ( 5 )
(6, 48)
          ( 6 )
(36, 63)
          ( 9 )
(36, 27)
          ( 9 )
(28, 16)
          ( 4 )
(72, 64)
          ( 8 )
(35, 20)
          ( 5 )
(20, 70)
          ( 10 )
        +[    ]

  ++[[       ]]