-er -ic -up c-- ccc ccd cce ccg cci cck ccp ccr ccu cdc cdd cde cdg cdi cdk cdp cdr cdu ce- cec ced cee ceg cei cek cep cer ceu cgc cgd cge cgg cgi cgp cgr cgu ci- cic cid cie cig cii cik cip cir ciu ckc ckd cki cpc cpd cpe cpg cpi cpk cpp cpr cpu crc crd cre crg cri crk crp crr cru cuc cud cue cug cui cuk cup cur cuu dcc dcd dce dcg dci dck dcp dcr dcu ddc ddd dde ddg ddi ddk ddp ddr ddu de- dec ded dee deg dei dek dep der deu dgc dgd dge dgg dgi dgk dgp dgr dgu di- dic did die dig dii dik dip dir diu dkc dke dkg dki dkk dkp dkr dku dpc dpd dpe dpg dpi dpk dpp dpr dpu drc drd dre drg dri drk drp drr dru duc dud due dug dui duk dup dur ec- ecc ecd ece ecg eci eck ecr ecu ed- edc edd ede edg edi edk edp edr edu eec eed eee eeg eek eep eer egc egd ege egg egi egp egr egu eic eid eie eig eii eik eip eir eiu ekc ekd eke ekg eki ekp ekr eku ep- epc epd epe epg epi epp epr epu erc erd ere erg eri erk erp err eru eu- euc eud eue eug eui eup eur g-d g-p gcc gcd gce gcg gci gck gcp gcr gcu gdc gdd gde gdi gdk gdp gdr gdu ge- gec ged gee geg gei gek gep ger geu ggc ggd ggg ggi ggp ggr ggu gic gid gie gig gii gik gip gir giu gkd gkp gpc gpd gpe gpg gpi gpk gpp gpr gpu grc grd gre grg gri grk grp grr gru gu- guc gud gue gug gui guk gup gur guu i-d icc icd ice icg ici ick icp icr icu idc idd ide idg idi idk idp idr idu ie- iec ied iee ieg iei iek iep ier igc igd ige igg igi igk igp igr igu iic iid iie iii iip iir iiu ikc ike iki ikk ikr iku ipc ipd ipe ipg ipi ipp ipr ipu ir- irc ird ire irg iri irk irp irr iru iu- iuc iud iue iug iui iup iur kcc kcd kce kcg kci kck kcp kcr kcu kdc kde kdg kdk kdp kdr kdu ke- kec ked kee keg kei kek kep ker kgc kgd kgi kgp kgu kic kid kie kig kii kik kip kir kiu kkc kke kki kkk kkp kkr kku kpc kpd kpe kpi kpk kpp kpr kpu krc krd krg kri krk krp krr kru kuc kud kue kug kui kuk kup kur kuu p-p pcc pcd pce pcg pci pck pcp pcr pcu pdc pdd pde pdg pdi pdk pdp pdr pdu pec ped pee peg pei pek pep per peu pgc pgd pge pgg pgi pgk pgp pgr pic pid pie pig pii pik pip pir piu pkc pkd pke pkg pki pkp pkr pku ppc ppd ppe ppg ppi ppk ppp ppr ppu prc prd pre prg pri prk prp prr pru puc pud pue pug pui puk pup pur puu rcc rcd rce rcg rci rcp rcr rcu rdc rdd rde rdg rdi rdp rdr rdu re- rec red ree reg rei rek rep rer reu rgc rgd rge rgg rgi rgk rgp rgr ric rid rie rig rii rik rip rir rkc rke rkg rkk rkp rku rpc rpd rpe rpg rpi rpk rpp rpr rpu rrc rrd rrg rri rrk rrp rrr rru ruc rud rue rug rui ruk rup rur ruu ucc ucd uce ucg uci uck ucp ucr ucu udc udd ude udg udi udk udp udr udu uec ued uee ueg uei uep uer ugc uge ugg ugi ugk ugp ugr ugu uic uid uie uig uii uip uir uiu ukc uke uki ukk ukp ukr uku up- upc upd upe upg upi upk upp upr upu ur- urc urd ure urg uri urk urp urr uru uuc uue uug uur uuu