C11112331312111112111133133313331333132313133313113313331333133313232233111   >>    C1111233131211111211113313331333133313231313331311331333133313331323223311   <<    C11112331312111112111133133313331333132313133313113313331333133313232233113   >>      C11112331312111112111133133313331333132313133313113313331333133313232233112   >>