C111112111133131121133133313331333133313331322331311331333133313331322312121   >>    C11111211113313112113313331333133313331333132233131133133313331333132231212   <<    C111112111133131121133133313331333133313331322331311331333133313331322312123   >>      C111112111133131121133133313331333133313331322331311331333133313331322312122   >>