C11112331312111112111133133313331333132313233313231323133313331311331322333121   >>    C1111233131211111211113313331333133313231323331323132313331333131133132233312   <<    C11112331312111112111133133313331333132313233313231323133313331311331322333123   >>      C11112331312111112111133133313331333132313233313231323133313331311331322333122   >>