C111112111133131121133133313331333133313331323133313331333133313223313311212221   >>    C11111211113313112113313331333133313331333132313331333133313331322331331121222   <<    C111112111133131121133133313331333133313331323133313331333133313223313311212223   >>      C111112111133131121133133313331333133313331323133313331333133313223313311212222   >>