C111112111133131121133133313331333133313331312111133133313233211113313223311321   >>    C11111211113313112113313331333133313331333131211113313331323321111331322331132   <<    C111112111133131121133133313331333133313331312111133133313233211113313223311323   >>      C111112111133131121133133313331333133313331312111133133313233211113313223311322   >>