ggg ggn ggo ggr ggz gnn gno gnr gog gon goo gor goz grg grn gro grr gzo gzr ngg ngn ngo nng nnn nno nnz no- nog non noo nor noz nrg nrn nro nrr nrz nzg nzo nzz ogg ogn ogo on- ong onn ono onr oo- oog oon ooo oor or- org orn oro orr orz ozo ozz rgg rgn rgo rgr rng rnn rno rnr rnz rog ron roo ror roz rrg rrn rrr rzo z-g zgg znn zno zo- zog zon zoo zor zro zzr zzz