C111112111133131121133133313331333133313331322121111331333133313232233133312111   >>    C11111211113313112113313331333133313331333132212111133133313331323223313331211   <<    C111112111133131121133133313331333133313331322121111331333133313232233133312113   >>      C111112111133131121133133313331333133313331322121111331333133313232233133312112   >>