(32, 40)
          ( 8 )

(16, 8)
          (    )

(50, 20)
          (    )

(9, 24)
          (    )

(36, 81)
          (    )

(50, 40)
          (    )

(77, 66)
          (    )

(36, 16)
          (    )

(24, 40)
          (    )

        +[    ]

(7, 14)
          (    )

(15, 10)
          (    )

(70, 60)
          (    )

(55, 11)
          (    )

(11, 77)
          (    )

(40, 50)
          (    )

(3, 12)
          (    )

(63, 36)
          (    )

(18, 3)
          (    )

        +[    ]

(4, 24)
          (    )

(63, 45)
          (    )

(28, 21)
          (    )

(81, 72)
          (    )

(56, 49)
          (    )

(12, 10)
          (    )

(55, 66)
          (    )

(8, 24)
          (    )

(80, 10)
          (    )

        +[    ]

(27, 18)
          (    )

(24, 20)
          (    )

(36, 6)
          (    )

(6, 42)
          (    )

(11, 77)
          (    )

(18, 27)
          (    )

(24, 54)
          (    )

(3, 15)
          (    )

(20, 36)
          (    )

        +[    ]

(72, 81)
          (    )

(4, 24)
          (    )

(18, 12)
          (    )

(14, 21)
          (    )

(35, 63)
          (    )

(12, 27)
          (    )

(48, 56)
          (    )

(4, 18)
          (    )

(21, 28)
          (    )

        +[    ]

  ++[[       ]]

(32, 40)
          ( 8 )
(16, 8)
          ( 8 )
(50, 20)
          ( 10 )
(9, 24)
          ( 3 )
(36, 81)
          ( 9 )
(50, 40)
          ( 10 )
(77, 66)
          ( 11 )
(36, 16)
          ( 4 )
(24, 40)
          ( 8 )
        +[    ]

(7, 14)
          ( 7 )
(15, 10)
          ( 5 )
(70, 60)
          ( 10 )
(55, 11)
          ( 11 )
(11, 77)
          ( 11 )
(40, 50)
          ( 10 )
(3, 12)
          ( 3 )
(63, 36)
          ( 9 )
(18, 3)
          ( 3 )
        +[    ]

(4, 24)
          ( 4 )
(63, 45)
          ( 9 )
(28, 21)
          ( 7 )
(81, 72)
          ( 9 )
(56, 49)
          ( 7 )
(12, 10)
          ( 2 )
(55, 66)
          ( 11 )
(8, 24)
          ( 8 )
(80, 10)
          ( 10 )
        +[    ]

(27, 18)
          ( 9 )
(24, 20)
          ( 4 )
(36, 6)
          ( 6 )
(6, 42)
          ( 6 )
(11, 77)
          ( 11 )
(18, 27)
          ( 9 )
(24, 54)
          ( 6 )
(3, 15)
          ( 3 )
(20, 36)
          ( 4 )
        +[    ]

(72, 81)
          ( 9 )
(4, 24)
          ( 4 )
(18, 12)
          ( 6 )
(14, 21)
          ( 7 )
(35, 63)
          ( 7 )
(12, 27)
          ( 3 )
(48, 56)
          ( 8 )
(4, 18)
          ( 2 )
(21, 28)
          ( 7 )
        +[    ]

  ++[[       ]]