C13112133313331323321333133313331333131211113313331333133323311331   >>    C1311213331333132332133313331333133313121111331333133313332331133   <<    C13112133313331323321333133313331333131211113313331333133323311333   >>      C13112133313331323321333133313331333131211113313331333133323311332   >>