(10, 70)
          ( 10 )

(10, 90)
          (    )

(24, 40)
          (    )

(77, 55)
          (    )

(12, 9)
          (    )

(36, 6)
          (    )

(4, 14)
          (    )

(48, 30)
          (    )

(10, 12)
          (    )

        +[    ]

(10, 8)
          (    )

(21, 6)
          (    )

(55, 22)
          (    )

(35, 5)
          (    )

(36, 20)
          (    )

(60, 70)
          (    )

(18, 63)
          (    )

(81, 9)
          (    )

(48, 8)
          (    )

        +[    ]

(18, 45)
          (    )

(56, 63)
          (    )

(30, 6)
          (    )

(12, 3)
          (    )

(6, 14)
          (    )

(27, 63)
          (    )

(21, 28)
          (    )

(27, 21)
          (    )

(15, 10)
          (    )

        +[    ]

(12, 27)
          (    )

(42, 7)
          (    )

(77, 66)
          (    )

(54, 45)
          (    )

(21, 6)
          (    )

(40, 10)
          (    )

(45, 72)
          (    )

(6, 27)
          (    )

(18, 63)
          (    )

        +[    ]

(12, 14)
          (    )

(2, 12)
          (    )

(40, 70)
          (    )

(20, 16)
          (    )

(30, 20)
          (    )

(36, 30)
          (    )

(25, 35)
          (    )

(16, 18)
          (    )

(20, 35)
          (    )

        +[    ]

  ++[[       ]]

(10, 70)
          ( 10 )
(10, 90)
          ( 10 )
(24, 40)
          ( 8 )
(77, 55)
          ( 11 )
(12, 9)
          ( 3 )
(36, 6)
          ( 6 )
(4, 14)
          ( 2 )
(48, 30)
          ( 6 )
(10, 12)
          ( 2 )
        +[    ]

(10, 8)
          ( 2 )
(21, 6)
          ( 3 )
(55, 22)
          ( 11 )
(35, 5)
          ( 5 )
(36, 20)
          ( 4 )
(60, 70)
          ( 10 )
(18, 63)
          ( 9 )
(81, 9)
          ( 9 )
(48, 8)
          ( 8 )
        +[    ]

(18, 45)
          ( 9 )
(56, 63)
          ( 7 )
(30, 6)
          ( 6 )
(12, 3)
          ( 3 )
(6, 14)
          ( 2 )
(27, 63)
          ( 9 )
(21, 28)
          ( 7 )
(27, 21)
          ( 3 )
(15, 10)
          ( 5 )
        +[    ]

(12, 27)
          ( 3 )
(42, 7)
          ( 7 )
(77, 66)
          ( 11 )
(54, 45)
          ( 9 )
(21, 6)
          ( 3 )
(40, 10)
          ( 10 )
(45, 72)
          ( 9 )
(6, 27)
          ( 3 )
(18, 63)
          ( 9 )
        +[    ]

(12, 14)
          ( 2 )
(2, 12)
          ( 2 )
(40, 70)
          ( 10 )
(20, 16)
          ( 4 )
(30, 20)
          ( 10 )
(36, 30)
          ( 6 )
(25, 35)
          ( 5 )
(16, 18)
          ( 2 )
(20, 35)
          ( 5 )
        +[    ]

  ++[[       ]]