C11112331312111112111133133313331333133313331333133313232233112111   >>    C1111233131211111211113313331333133313331333133313331323223311211   <<    C11112331312111112111133133313331333133313331333133313232233112113   >>      C11112331312111112111133133313331333133313331333133313232233112112   >>