C11112331312111112111133133313331333132313233313231322331123231   >>    C1111233131211111211113313331333133313231323331323132233112323   <<    C11112331312111112111133133313331333132313233313231322331123233   >>      C11112331312111112111133133313331333132313233313231322331123232   >>