C111112111133131121133133313331311331333132223133313231322331221   >>    C11111211113313112113313331333131133133313222313331323132233122   <<    C111112111133131121133133313331311331333132223133313231322331223   >>      C111112111133131121133133313331311331333132223133313231322331222   >>