g-p ggg ggo ggp ggr ggs ggt gog goo gop gor gos got gpg gpo gpp gpr gps gpt grg gro grp grr grs grt gsg gso gsp gsr gss gst gtg gto gtp gtr gts gtt ogg ogo ogp ogs ogt oo- oog ooo oop oor oos oot op- opg opo opp opr ops opt or- org oro orp orr ors ort os- osg oso osp osr oss ost ot- otg oto otp otr ots ott p-p pgg pgo pgp pgr pgs pgt pog poo pop por pos pot ppg ppo ppp ppr pps ppt prg pro prp prr prs prt ps- psg pso psp psr pss pst pt- ptg pto ptp ptr pts ptt rgg rgo rgp rgr rgs rgt rog roo rop ror ros rot rpg rpo rpp rpr rps rpt rrg rrp rrr rrs rrt rsg rso rsp rsr rss rst rtg rto rtp rtr rts rtt sgg sgo sgp sgr sgs sgt sog soo sop sor sos sot spg spo spp spr sps spt sr- srg sro srp srr srs srt ss- ssg sso ssp ssr sss sst stg sto stp str sts stt tgg tgo tgp tgr tgs tgt to- tog too top tor tos tot tpg tpo tpp tpr tps tpt trg tro trp trr trs trt tsg tso tsp tsr tss tst ttg tto ttp ttr tts ttt