C111112111133131121133133313331333133313331323133313331333133313331333233112221   >>    C11111211113313112113313331333133313331333132313331333133313331333133323311222   <<    C111112111133131121133133313331333133313331323133313331333133313331333233112223   >>      C111112111133131121133133313331333133313331323133313331333133313331333233112222   >>