(20, 70)
          ( 10 )

(6, 6)
          (    )

(40, 50)
          (    )

(56, 49)
          (    )

(28, 35)
          (    )

(48, 40)
          (    )

(49, 63)
          (    )

(72, 16)
          (    )

(25, 5)
          (    )

        +[    ]

(48, 54)
          (    )

(20, 16)
          (    )

(88, 99)
          (    )

(16, 36)
          (    )

(10, 10)
          (    )

(15, 35)
          (    )

(54, 30)
          (    )

(88, 55)
          (    )

(27, 18)
          (    )

        +[    ]

(45, 35)
          (    )

(12, 54)
          (    )

(4, 12)
          (    )

(24, 27)
          (    )

(42, 12)
          (    )

(21, 49)
          (    )

(18, 15)
          (    )

(28, 7)
          (    )

(36, 6)
          (    )

        +[    ]

(36, 63)
          (    )

(14, 8)
          (    )

(40, 45)
          (    )

(12, 9)
          (    )

(36, 30)
          (    )

(44, 99)
          (    )

(10, 18)
          (    )

(35, 14)
          (    )

(4, 2)
          (    )

        +[    ]

(36, 4)
          (    )

(40, 15)
          (    )

(18, 3)
          (    )

(21, 27)
          (    )

(42, 49)
          (    )

(6, 36)
          (    )

(20, 25)
          (    )

(90, 50)
          (    )

(63, 28)
          (    )

        +[    ]

  ++[[       ]]

(20, 70)
          ( 10 )
(6, 6)
          ( 6 )
(40, 50)
          ( 10 )
(56, 49)
          ( 7 )
(28, 35)
          ( 7 )
(48, 40)
          ( 8 )
(49, 63)
          ( 7 )
(72, 16)
          ( 8 )
(25, 5)
          ( 5 )
        +[    ]

(48, 54)
          ( 6 )
(20, 16)
          ( 4 )
(88, 99)
          ( 11 )
(16, 36)
          ( 4 )
(10, 10)
          ( 10 )
(15, 35)
          ( 5 )
(54, 30)
          ( 6 )
(88, 55)
          ( 11 )
(27, 18)
          ( 9 )
        +[    ]

(45, 35)
          ( 5 )
(12, 54)
          ( 6 )
(4, 12)
          ( 4 )
(24, 27)
          ( 3 )
(42, 12)
          ( 6 )
(21, 49)
          ( 7 )
(18, 15)
          ( 3 )
(28, 7)
          ( 7 )
(36, 6)
          ( 6 )
        +[    ]

(36, 63)
          ( 9 )
(14, 8)
          ( 2 )
(40, 45)
          ( 5 )
(12, 9)
          ( 3 )
(36, 30)
          ( 6 )
(44, 99)
          ( 11 )
(10, 18)
          ( 2 )
(35, 14)
          ( 7 )
(4, 2)
          ( 2 )
        +[    ]

(36, 4)
          ( 4 )
(40, 15)
          ( 5 )
(18, 3)
          ( 3 )
(21, 27)
          ( 3 )
(42, 49)
          ( 7 )
(6, 36)
          ( 6 )
(20, 25)
          ( 5 )
(90, 50)
          ( 10 )
(63, 28)
          ( 7 )
        +[    ]

  ++[[       ]]