C3123121111113313121111331333133313223313331333133313223313231323131121   >>    C312312111111331312111133133313331322331333133313331322331323132313112   <<    C3123121111113313121111331333133313223313331333133313223313231323131123   >>      C3123121111113313121111331333133313223313331333133313223313231323131122   >>