[copied from ../../consense/5/help_merged_expected.tree
]
(
  (
    C:0.10000,
    (
      A:0.10000,
      B:0.10000
    ):0.15000
  )33:0.10000,
  (
    D:0.10000,
    (
      E:0.10000,
      F:0.10000
    )56:0.10000
  )33:0.10000
);