C111112111133131121133133313331333133313331323133313331331121111121111332213111   >>    C11111211113313112113313331333133313331333132313331333133112111112111133221311   <<    C111112111133131121133133313331333133313331323133313331331121111121111332213113   >>      C111112111133131121133133313331333133313331323133313331331121111121111332213112   >>