C11112331312111112111133133313331333133313331333133313331323112133313233111   >>    C1111233131211111211113313331333133313331333133313331333132311213331323311   <<    C11112331312111112111133133313331333133313331333133313331323112133313233113   >>      C11112331312111112111133133313331333133313331333133313331323112133313233112   >>