C11112331312111112111133133313331333132313233313331333132233133321231   >>    C1111233131211111211113313331333133313231323331333133313223313332123   <<    C11112331312111112111133133313331333132313233313331333132233133321233   >>      C11112331312111112111133133313331333132313233313331333132233133321232   >>