(50, 40)
          ( 10 )

(27, 12)
          (    )

(64, 56)
          (    )

(33, 77)
          (    )

(28, 35)
          (    )

(81, 72)
          (    )

(11, 55)
          (    )

(88, 55)
          (    )

(66, 77)
          (    )

        +[    ]

(40, 16)
          (    )

(42, 12)
          (    )

(16, 8)
          (    )

(24, 15)
          (    )

(8, 24)
          (    )

(40, 48)
          (    )

(42, 6)
          (    )

(30, 18)
          (    )

(60, 70)
          (    )

        +[    ]

(4, 10)
          (    )

(40, 15)
          (    )

(6, 21)
          (    )

(32, 40)
          (    )

(14, 12)
          (    )

(77, 99)
          (    )

(6, 3)
          (    )

(8, 56)
          (    )

(70, 30)
          (    )

        +[    ]

(16, 28)
          (    )

(99, 44)
          (    )

(80, 70)
          (    )

(28, 7)
          (    )

(9, 6)
          (    )

(44, 11)
          (    )

(27, 72)
          (    )

(30, 6)
          (    )

(12, 3)
          (    )

        +[    ]

(63, 54)
          (    )

(12, 9)
          (    )

(80, 10)
          (    )

(32, 28)
          (    )

(66, 55)
          (    )

(27, 12)
          (    )

(16, 6)
          (    )

(28, 4)
          (    )

(15, 27)
          (    )

        +[    ]

  ++[[       ]]

(50, 40)
          ( 10 )
(27, 12)
          ( 3 )
(64, 56)
          ( 8 )
(33, 77)
          ( 11 )
(28, 35)
          ( 7 )
(81, 72)
          ( 9 )
(11, 55)
          ( 11 )
(88, 55)
          ( 11 )
(66, 77)
          ( 11 )
        +[    ]

(40, 16)
          ( 8 )
(42, 12)
          ( 6 )
(16, 8)
          ( 8 )
(24, 15)
          ( 3 )
(8, 24)
          ( 8 )
(40, 48)
          ( 8 )
(42, 6)
          ( 6 )
(30, 18)
          ( 6 )
(60, 70)
          ( 10 )
        +[    ]

(4, 10)
          ( 2 )
(40, 15)
          ( 5 )
(6, 21)
          ( 3 )
(32, 40)
          ( 8 )
(14, 12)
          ( 2 )
(77, 99)
          ( 11 )
(6, 3)
          ( 3 )
(8, 56)
          ( 8 )
(70, 30)
          ( 10 )
        +[    ]

(16, 28)
          ( 4 )
(99, 44)
          ( 11 )
(80, 70)
          ( 10 )
(28, 7)
          ( 7 )
(9, 6)
          ( 3 )
(44, 11)
          ( 11 )
(27, 72)
          ( 9 )
(30, 6)
          ( 6 )
(12, 3)
          ( 3 )
        +[    ]

(63, 54)
          ( 9 )
(12, 9)
          ( 3 )
(80, 10)
          ( 10 )
(32, 28)
          ( 4 )
(66, 55)
          ( 11 )
(27, 12)
          ( 3 )
(16, 6)
          ( 2 )
(28, 4)
          ( 4 )
(15, 27)
          ( 3 )
        +[    ]

  ++[[       ]]