C111112111133131121133133313331333133313331323133313331333133313112221121111   >>    C11111211113313112113313331333133313331333132313331333133313331311222112111   <<    C111112111133131121133133313331333133313331323133313331333133313112221121113   >>      C111112111133131121133133313331333133313331323133313331333133313112221121112   >>