C11112331312111112111133133313331333132313233313331311321331121   >>    C1111233131211111211113313331333133313231323331333131132133112   <<    C11112331312111112111133133313331333132313233313331311321331123   >>      C11112331312111112111133133313331333132313233313331311321331122   >>