C1111233131211111211113313331333133313331333133313331333133313223313113233111   >>    C111123313121111121111331333133313331333133313331333133313331322331311323311   <<    C1111233131211111211113313331333133313331333133313331333133313223313113233113   >>      C1111233131211111211113313331333133313331333133313331333133313223313113233112   >>