C111112111133131121133133313331333133311221123121111331323223211113313233111   >>    C11111211113313112113313331333133313331122112312111133132322321111331323311   <<    C111112111133131121133133313331333133311221123121111331323223211113313233113   >>      C111112111133131121133133313331333133311221123121111331323223211113313233112   >>