C111112111133131121133133313331333133313123221211113313331322331333222211213111   >>    C11111211113313112113313331333133313331312322121111331333132233133322221121311   <<    C111112111133131121133133313331333133313123221211113313331322331333222211213113   >>      C111112111133131121133133313331333133313123221211113313331322331333222211213112   >>