ggg ggn ggo ggr gkn gko gnn gno gnr gog gok gon goo gor grg grk grn gro grr kgo kkk kkn kkr kn- kng knk knn kno knr kog kok kon koo kor krg krk krn kro krr ngg ngk ngn ngo nkk nkn nko nkr nng nnk nnn nno no- nog nok non noo nor nrg nrk nrn nro nrr ogg ogn ogo okg okk oko okr on- ong onk onn ono onr oo- oog ook oon ooo oor or- org ork orn oro orr rgg rgk rgn rgo rgr rkg rkk rko rng rnn rno rnr rog rok ron roo ror rrg rrk rrn rrr