-up g-p ggg ggo ggp ggr ggs ggu gog goo gop gor gos gou gpg gpo gpp gpr gps gpu grg gro grp grr grs gru gsg gso gsp gsr gss gsu gu- gug guo gup gur gus guu ogg ogo ogp ogs oo- oog ooo oop oor oos op- opg opo opp opr ops or- org oro orp orr ors oru os- osg oso osp osr oss osu ou- ouo oup our ous p-p pgg pgo pgp pgr pgs pog poo pop por pos pou ppg ppo ppp ppr pps ppu prg pro prp prr prs pru ps- psg pso psp psr pss psu pug pup pur pus puu rgg rgo rgp rgr rgs rog roo rop ror ros rou rpg rpo rpp rpr rps rpu rrg rrp rrr rrs rru rsg rso rsp rsr rss rsu rug ruo rup rur rus ruu sgg sgo sgp sgr sgs sgu sog soo sop sor sos sou spg spo spp spr sps spu sr- srg sro srp srr srs ss- ssg sso ssp ssr sss ssu sug suo sup sur sus suu ugg ugo ugp ugr ugs ugu uog uoo uop uor uos up- upg upo upp upr ups upu ur- urg uro urp urr urs uru usg uso usp usr uss usu uug uur uus uuu