C111112111133131121133133313331333133313331323133313331333133313233213112323311   >>    C11111211113313112113313331333133313331333132313331333133313331323321311232331   <<    C111112111133131121133133313331333133313331323133313331333133313233213112323313   >>      C111112111133131121133133313331333133313331323133313331333133313233213112323312   >>