-er -up ddd dde ddg ddo ddp ddr dds ddu de- ded dee deg deo dep der des deu dgd dge dgg dgp dgr dgs dgu dod doe dog doo dop dor dos dou dpd dpe dpg dpo dpp dpr dps dpu drd dre drg dro drp drr drs dru dsd dse dsg dso dsp dsr dss dsu dud due dug duo dup dur dus ed- edd ede edg edo edp edr eds edu eed eee eeg eeo eep eer ees egd ege egg ego egp egr egs egu eo- eod eoe eog eoo eop eor eos eou ep- epd epe epg epo epp epr eps epu erd ere erg ero erp err ers eru es- esd ese esg eso esp esr ess esu eu- eud eue eug eup eur eus g-d g-p gdd gde gdo gdp gdr gds gdu ge- ged gee geg geo gep ger ges geu ggd ggg ggo ggp ggr ggs ggu god goe gog goo gop gor gos gou gpd gpe gpg gpo gpp gpr gps gpu grd gre grg gro grp grr grs gru gsd gse gsg gso gsp gsr gss gsu gu- gud gue gug guo gup gur gus guu odd ode odg odo odp odr ods odu oed oee oeg oeo oep oer oes ogd oge ogg ogo ogp ogs oo- ood oog ooo oop oor oos op- opd ope opg opo opp opr ops or- ord ore org oro orp orr ors oru os- osd ose osg oso osp osr oss osu ou- oud oue ouo oup our ous p-p pdd pde pdg pdo pdp pdr pds pdu ped pee peg peo pep per pes peu pgd pge pgg pgo pgp pgr pgs pod poe pog poo pop por pos pou ppd ppe ppg ppo ppp ppr pps ppu prd pre prg pro prp prr prs pru ps- psd pse psg pso psp psr pss psu pud pue pug pup pur pus puu rdd rde rdg rdo rdp rdr rds rdu re- red ree reg reo rep rer res reu rgd rge rgg rgo rgp rgr rgs rod roe rog roo rop ror ros rou rpd rpe rpg rpo rpp rpr rps rpu rrd rrg rrp rrr rrs rru rsd rse rsg rso rsp rsr rss rsu rud rue rug ruo rup rur rus ruu sdd sde sdg sdo sdp sdr sds sdu se- sed see seg seo sep ser ses seu sgd sge sgg sgo sgp sgr sgs sgu sod soe sog soo sop sor sos sou spd spe spg spo spp spr sps spu sr- srd sre srg sro srp srr srs ss- ssd sse ssg sso ssp ssr sss ssu sud sue sug suo sup sur sus suu udd ude udg udo udp udr uds udu ued uee ueg uep uer ues uge ugg ugo ugp ugr ugs ugu uod uoe uog uoo uop uor uos up- upd upe upg upo upp upr ups upu ur- urd ure urg uro urp urr urs uru usd use usg uso usp usr uss usu uue uug uur uus uuu