g-p ggg ggi ggo ggp ggs gig gii gik gio gip gis gko gkp gks gog goi gok goo gop gos gpg gpi gpk gpo gpp gps gsg gsi gsk gso gsp gss igg igi igk igo igp igs iii iio iip iis iki ikk iko iks io- iog ioi ioo iop ios ipg ipi ipo ipp ips is- isg isi isk iso isp iss kgi kgo kgp kgs kig kii kik kio kip kis kki kkk kkp kks kog koi kok koo kop kos kpi kpk kpo kpp kps ksg ksi ksk kso ksp kss o-i ogg ogi ogo ogp ogs oii oik oio oip ois okg oki okk oko okp oks oo- oog ooi ook ooo oop oos op- opg opi opk opo opp ops os- osg osi osk oso osp oss p-p pgg pgi pgk pgo pgp pgs pig pii pik pio pip pis pkg pki pko pkp pks pog poi pok poo pop pos ppg ppi ppk ppo ppp pps ps- psg psi psk pso psp pss sgg sgi sgk sgo sgp sgs sig sii sik sio sip sis sk- skg ski skk sko skp sks sog soi sok soo sop sos spg spi spk spo spp sps ss- ssg ssi ssk sso ssp sss