C11112331312111112111133133313331333132313233313112211232331131   >>    C1111233131211111211113313331333133313231323331311221123233113   <<    C11112331312111112111133133313331333132313233313112211232331133   >>      C11112331312111112111133133313331333132313233313112211232331132   >>