C111112111133131121133133313331333133313331332133313331333133313233113321   >>    C11111211113313112113313331333133313331333133213331333133313331323311332   <<    C111112111133131121133133313331333133313331332133313331333133313233113323   >>      C111112111133131121133133313331333133313331332133313331333133313233113322   >>