(16, 20)
          ( 4 )

(48, 40)
          (    )

(42, 30)
          (    )

(33, 22)
          (    )

(18, 10)
          (    )

(18, 42)
          (    )

(24, 15)
          (    )

(80, 30)
          (    )

(3, 3)
          (    )

        +[    ]

(24, 27)
          (    )

(11, 11)
          (    )

(6, 8)
          (    )

(20, 35)
          (    )

(10, 12)
          (    )

(16, 56)
          (    )

(14, 7)
          (    )

(42, 49)
          (    )

(16, 28)
          (    )

        +[    ]

(40, 16)
          (    )

(32, 72)
          (    )

(10, 80)
          (    )

(2, 16)
          (    )

(20, 28)
          (    )

(36, 45)
          (    )

(63, 72)
          (    )

(2, 16)
          (    )

(4, 8)
          (    )

        +[    ]

(3, 15)
          (    )

(30, 54)
          (    )

(36, 4)
          (    )

(8, 56)
          (    )

(77, 88)
          (    )

(88, 55)
          (    )

(30, 25)
          (    )

(77, 99)
          (    )

(8, 10)
          (    )

        +[    ]

(56, 48)
          (    )

(14, 6)
          (    )

(30, 5)
          (    )

(45, 35)
          (    )

(16, 18)
          (    )

(18, 21)
          (    )

(35, 30)
          (    )

(22, 33)
          (    )

(6, 2)
          (    )

        +[    ]

  ++[[       ]]

(16, 20)
          ( 4 )
(48, 40)
          ( 8 )
(42, 30)
          ( 6 )
(33, 22)
          ( 11 )
(18, 10)
          ( 2 )
(18, 42)
          ( 6 )
(24, 15)
          ( 3 )
(80, 30)
          ( 10 )
(3, 3)
          ( 3 )
        +[    ]

(24, 27)
          ( 3 )
(11, 11)
          ( 11 )
(6, 8)
          ( 2 )
(20, 35)
          ( 5 )
(10, 12)
          ( 2 )
(16, 56)
          ( 8 )
(14, 7)
          ( 7 )
(42, 49)
          ( 7 )
(16, 28)
          ( 4 )
        +[    ]

(40, 16)
          ( 8 )
(32, 72)
          ( 8 )
(10, 80)
          ( 10 )
(2, 16)
          ( 2 )
(20, 28)
          ( 4 )
(36, 45)
          ( 9 )
(63, 72)
          ( 9 )
(2, 16)
          ( 2 )
(4, 8)
          ( 4 )
        +[    ]

(3, 15)
          ( 3 )
(30, 54)
          ( 6 )
(36, 4)
          ( 4 )
(8, 56)
          ( 8 )
(77, 88)
          ( 11 )
(88, 55)
          ( 11 )
(30, 25)
          ( 5 )
(77, 99)
          ( 11 )
(8, 10)
          ( 2 )
        +[    ]

(56, 48)
          ( 8 )
(14, 6)
          ( 2 )
(30, 5)
          ( 5 )
(45, 35)
          ( 5 )
(16, 18)
          ( 2 )
(18, 21)
          ( 3 )
(35, 30)
          ( 5 )
(22, 33)
          ( 11 )
(6, 2)
          ( 2 )
        +[    ]

  ++[[       ]]