C11112331312111112111133132313331333133313233313331333132233121   >>    C1111233131211111211113313231333133313331323331333133313223312   <<    C11112331312111112111133132313331333133313233313331333132233123   >>      C11112331312111112111133132313331333133313233313331333132233122   >>