C111112111133131121133133313331333133313331323133313331333133313222213233111   >>    C11111211113313112113313331333133313331333132313331333133313331322221323311   <<    C111112111133131121133133313331333133313331323133313331333133313222213233113   >>      C111112111133131121133133313331333133313331323133313331333133313222213233112   >>