g-p ggg ggo ggp ggs ggt gog goo gop gos got gpg gpo gpp gps gpt gsg gso gsp gss gst gtg gto gtp gts gtt ogg ogo ogp ogs ogt oo- oog ooo oop oos oot op- opg opo opp ops opt os- osg oso osp oss ost ot- otg oto otp ots ott p-p pgg pgo pgp pgs pgt pog poo pop pos pot ppg ppo ppp pps ppt ps- psg pso psp pss pst pt- ptg pto ptp pts ptt sgg sgo sgp sgs sgt sog soo sop sos sot spg spo spp sps spt ss- ssg sso ssp sss sst stg sto stp sts stt tgg tgo tgp tgs tgt to- tog too top tos tot tpg tpo tpp tps tpt tsg tso tsp tss tst ttg tto ttp tts ttt