C11112331312111112111133133313331333132313233313113313223332322231   >>    C1111233131211111211113313331333133313231323331311331322333232223   <<    C11112331312111112111133133313331333132313233313113313223332322233   >>      C11112331312111112111133133313331333132313233313113313223332322232   >>