C1111133313331323223313331333133313311232313112121111331311331311212121   >>    C111113331333132322331333133313331331123231311212111133131133131121212   <<    C1111133313331323223313331333133313311232313112121111331311331311212123   >>      C1111133313331323223313331333133313311232313112121111331311331311212122   >>