C111112111133131121133133313331323133313311211111133133313232233121   >>    C11111211113313112113313331333132313331331121111113313331323223312   <<    C111112111133131121133133313331323133313311211111133133313232233123   >>      C111112111133131121133133313331323133313311211111133133313232233122   >>