C11112331312111112111133132313331333133313233313113313331333133313223313231131   >>    C1111233131211111211113313231333133313331323331311331333133313331322331323113   <<    C11112331312111112111133132313331333133313233313113313331333133313223313231133   >>      C11112331312111112111133132313331333133313233313113313331333133313223313231132   >>