C111112111133131121133133313331333133313331323133313331331121111133313232222121   >>    C11111211113313112113313331333133313331333132313331333133112111113331323222212   <<    C111112111133131121133133313331333133313331323133313331331121111133313232222123   >>      C111112111133131121133133313331333133313331323133313331331121111133313232222122   >>