(20, 16)
          ( 4 )

(10, 14)
          (    )

(21, 9)
          (    )

(8, 12)
          (    )

(64, 72)
          (    )

(2, 4)
          (    )

(16, 40)
          (    )

(20, 35)
          (    )

(54, 45)
          (    )

        +[    ]

(27, 6)
          (    )

(33, 88)
          (    )

(24, 64)
          (    )

(35, 21)
          (    )

(14, 35)
          (    )

(56, 40)
          (    )

(16, 20)
          (    )

(21, 7)
          (    )

(56, 24)
          (    )

        +[    ]

(3, 27)
          (    )

(63, 28)
          (    )

(25, 20)
          (    )

(7, 28)
          (    )

(50, 40)
          (    )

(4, 2)
          (    )

(12, 3)
          (    )

(55, 66)
          (    )

(70, 80)
          (    )

        +[    ]

(80, 70)
          (    )

(90, 70)
          (    )

(24, 15)
          (    )

(4, 10)
          (    )

(6, 21)
          (    )

(32, 28)
          (    )

(54, 6)
          (    )

(72, 81)
          (    )

(54, 9)
          (    )

        +[    ]

(63, 49)
          (    )

(35, 21)
          (    )

(36, 20)
          (    )

(63, 14)
          (    )

(64, 72)
          (    )

(45, 72)
          (    )

(55, 88)
          (    )

(72, 40)
          (    )

(15, 35)
          (    )

        +[    ]

  ++[[       ]]

(20, 16)
          ( 4 )
(10, 14)
          ( 2 )
(21, 9)
          ( 3 )
(8, 12)
          ( 4 )
(64, 72)
          ( 8 )
(2, 4)
          ( 2 )
(16, 40)
          ( 8 )
(20, 35)
          ( 5 )
(54, 45)
          ( 9 )
        +[    ]

(27, 6)
          ( 3 )
(33, 88)
          ( 11 )
(24, 64)
          ( 8 )
(35, 21)
          ( 7 )
(14, 35)
          ( 7 )
(56, 40)
          ( 8 )
(16, 20)
          ( 4 )
(21, 7)
          ( 7 )
(56, 24)
          ( 8 )
        +[    ]

(3, 27)
          ( 3 )
(63, 28)
          ( 7 )
(25, 20)
          ( 5 )
(7, 28)
          ( 7 )
(50, 40)
          ( 10 )
(4, 2)
          ( 2 )
(12, 3)
          ( 3 )
(55, 66)
          ( 11 )
(70, 80)
          ( 10 )
        +[    ]

(80, 70)
          ( 10 )
(90, 70)
          ( 10 )
(24, 15)
          ( 3 )
(4, 10)
          ( 2 )
(6, 21)
          ( 3 )
(32, 28)
          ( 4 )
(54, 6)
          ( 6 )
(72, 81)
          ( 9 )
(54, 9)
          ( 9 )
        +[    ]

(63, 49)
          ( 7 )
(35, 21)
          ( 7 )
(36, 20)
          ( 4 )
(63, 14)
          ( 7 )
(64, 72)
          ( 8 )
(45, 72)
          ( 9 )
(55, 88)
          ( 11 )
(72, 40)
          ( 8 )
(15, 35)
          ( 5 )
        +[    ]

  ++[[       ]]