C111112111133131121133133313331333133313331323133313331333133313233313133312321   >>    C11111211113313112113313331333133313331333132313331333133313331323331313331232   <<    C111112111133131121133133313331333133313331323133313331333133313233313133312323   >>      C111112111133131121133133313331333133313331323133313331333133313233313133312322   >>