C11112331312111112111133133313331333133313331333133313223313331311331323233231   >>    C1111233131211111211113313331333133313331333133313331322331333131133132323323   <<    C11112331312111112111133133313331333133313331333133313223313331311331323233233   >>      C11112331312111112111133133313331333133313331333133313223313331311331323233232   >>