-er -up c-- ccc ccd cce ccg cco ccp ccr ccs ccu cdc cdd cde cdg cdo cdp cdr cds cdu ce- cec ced cee ceg ceo cep cer ces ceu cgc cgd cge cgg cgo cgp cgr cgs cgu co- coc cod coe cog coo cop cor cos cou cpc cpd cpe cpg cpo cpp cpr cps cpu crc crd cre crg cro crp crr crs cru csc csd cse csg cso csp csr css csu cuc cud cue cug cuo cup cur cus cuu dcc dcd dce dcg dco dcp dcr dcs dcu ddc ddd dde ddg ddo ddp ddr dds ddu de- dec ded dee deg deo dep der des deu dgc dgd dge dgg dgp dgr dgs dgu doc dod doe dog doo dop dor dos dou dpc dpd dpe dpg dpo dpp dpr dps dpu drc drd dre drg dro drp drr drs dru dsc dsd dse dsg dso dsp dsr dss dsu duc dud due dug duo dup dur dus ec- ecc ecd ece ecg eco ecr ecs ecu ed- edc edd ede edg edo edp edr eds edu eec eed eee eeg eeo eep eer ees egc egd ege egg ego egp egr egs egu eo- eoc eod eoe eog eoo eop eor eos eou ep- epc epd epe epg epo epp epr eps epu erc erd ere erg ero erp err ers eru es- esc esd ese esg eso esp esr ess esu eu- euc eud eue eug eup eur eus g-d g-p gcc gcd gce gcg gco gcp gcr gcs gcu gdc gdd gde gdo gdp gdr gds gdu ge- gec ged gee geg geo gep ger ges geu ggc ggd ggg ggo ggp ggr ggs ggu goc god goe gog goo gop gor gos gou gpc gpd gpe gpg gpo gpp gpr gps gpu grc grd gre grg gro grp grr grs gru gsc gsd gse gsg gso gsp gsr gss gsu gu- guc gud gue gug guo gup gur gus guu oc- occ ocd ocg oco ocp ocr ocs ocu odc odd ode odg odo odp odr ods odu oec oed oee oeg oeo oep oer oes ogc ogd oge ogg ogo ogp ogs oo- ooc ood oog ooo oop oor oos op- opc opd ope opg opo opp opr ops or- orc ord ore org oro orp orr ors oru os- osc osd ose osg oso osp osr oss osu ou- ouc oud oue ouo oup our ous p-p pcc pcd pce pcg pco pcp pcr pcs pcu pdc pdd pde pdg pdo pdp pdr pds pdu pec ped pee peg peo pep per pes peu pgc pgd pge pgg pgo pgp pgr pgs poc pod poe pog poo pop por pos pou ppc ppd ppe ppg ppo ppp ppr pps ppu prc prd pre prg pro prp prr prs pru ps- psc psd pse psg pso psp psr pss psu puc pud pue pug pup pur pus puu rcc rcd rce rcg rco rcp rcr rcs rcu rdc rdd rde rdg rdo rdp rdr rds rdu re- rec red ree reg reo rep rer res reu rgc rgd rge rgg rgo rgp rgr rgs roc rod roe rog roo rop ror ros rou rpc rpd rpe rpg rpo rpp rpr rps rpu rrc rrd rrg rrp rrr rrs rru rsc rsd rse rsg rso rsp rsr rss rsu ruc rud rue rug ruo rup rur rus ruu scc scd sce scg sco scp scr scs scu sdc sdd sde sdg sdo sdp sdr sds sdu se- sec sed see seg seo sep ser ses seu sgc sgd sge sgg sgo sgp sgr sgs sgu soc sod soe sog soo sop sor sos sou spc spd spe spg spo spp spr sps spu sr- src srd sre srg sro srp srr srs ss- ssc ssd sse ssg sso ssp ssr sss ssu suc sud sue sug suo sup sur sus suu ucc ucd uce ucg uco ucp ucr ucs ucu udc udd ude udg udo udp udr uds udu uec ued uee ueg uep uer ues ugc uge ugg ugo ugp ugr ugs ugu uoc uod uoe uog uoo uop uor uos up- upc upd upe upg upo upp upr ups upu ur- urc urd ure urg uro urp urr urs uru usc usd use usg uso usp usr uss usu uuc uue uug uur uus uuu