C111112111133131121133133313331333133313331323133313331333133313223313232313221   >>    C11111211113313112113313331333133313331333132313331333133313331322331323231322   <<    C111112111133131121133133313331333133313331323133313331333133313223313232313223   >>      C111112111133131121133133313331333133313331323133313331333133313223313232313222   >>