-[0000:00]-+-00.0
           +-01.0
           +-01.1
           +-02.0
           +-02.1
           +-04.0
           +-06.0
           +-07.0
           +-08.0
           +-09.0-[0000:05]--+-0a.0
           |                 +-0b.0
           |                 \-0c.0
           +-0a.0
           +-0b.0-[0000:04]--
           +-0c.0-[0000:03]--
           +-0d.0-[0000:02]--
           +-0e.0-[0000:01]----00.0
           +-18.0
           +-18.1
           +-18.2
           \-18.3