C1111133313331323223313331333133313331333232111211113313113311211   >>    C111113331333132322331333133313331333133323211121111331311331121   <<    C1111133313331323223313331333133313331333232111211113313113311213   >>      C1111133313331323223313331333133313331333232111211113313113311212   >>