-er -ic -up c-- ccc cce ccf ccg cci cck ccp ccr ccs ccu ce- cec cee cef ceg cei cek cep cer ces ceu cfc cfe cff cfg cfi cfk cfp cfr cfs cfu cgc cge cgg cgi cgp cgr cgs cgu ci- cic cie cif cig cii cik cip cir cis ciu ckc cki cks cpc cpe cpf cpg cpi cpk cpp cpr cps cpu crc cre crf crg cri crk crp crr crs cru csc cse csf csg csi csk csp csr css csu cuc cue cuf cug cui cuk cup cur cus cuu ec- ecc ece ecf ecg eci eck ecr ecs ecu eec eee eef eeg eek eep eer ees ef- efc efe eff efg efi efp efr efs egc ege egf egg egi egp egr egs egu eic eie eif eig eii eik eip eir eis eiu ekc eke ekf ekg eki ekp ekr eks eku ep- epc epe epf epg epi epp epr eps epu erc ere erf erg eri erk erp err ers eru es- esc ese esf esg esi esk esp esr ess esu eu- euc eue euf eug eui eup eur eus fcc fce fcf fcg fci fck fcp fcr fcs fcu fec fee fef feg fei fek fep fer fes feu ffc ffe fff ffg ffi ffk ffp ffr ffs ffu fgc fge fgf fgg fgi fgp fgr fgs fic fie fif fig fii fik fip fir fis fiu fkc fkf fkg fki fkk fkp fpc fpe fpg fpi fpk fpp fpr fps fpu frc fre frf frg fri frk frp frr frs fru fsc fse fsf fsg fsi fsk fsp fsr fss fsu fue fuf fug fui fuk fup fur fus fuu g-p gcc gce gcf gcg gci gck gcp gcr gcs gcu ge- gec gee gef geg gei gek gep ger ges geu gfc gfe gff gfi gfk gfp gfr gfs ggc ggg ggi ggp ggr ggs ggu gic gie gif gig gii gik gip gir gis giu gkp gks gpc gpe gpf gpg gpi gpk gpp gpr gps gpu grc gre grf grg gri grk grp grr grs gru gsc gse gsf gsg gsi gsk gsp gsr gss gsu gu- guc gue guf gug gui guk gup gur gus guu i-f icc ice icf icg ici ick icp icr ics icu ie- iec iee ief ieg iei iek iep ier ies ifc ife iff ifg ifi ifp ifr ifs ifu igc ige igf igg igi igk igp igr igs igu iic iie iif iii iip iir iis iiu ikc ike ikf iki ikk ikr iks iku ipc ipe ipf ipg ipi ipp ipr ips ipu ir- irc ire irf irg iri irk irp irr irs iru is- isc ise isf isg isi isk isp isr iss isu iu- iuc iue iug iui iup iur ius kcc kce kcg kci kck kcp kcr kcs kcu ke- kec kee kef keg kei kek kep ker kes kfc kff kfg kfi kfs kfu kgc kgf kgi kgp kgs kgu kic kie kif kig kii kik kip kir kis kiu kkc kke kki kkk kkp kkr kks kku kpc kpe kpf kpi kpk kpp kpr kps kpu krc krf krg kri krk krp krr krs kru ksc kse ksf ksg ksi ksk ksp ksr kss ksu kuc kue kug kui kuk kup kur kus kuu p-p pcc pce pcf pcg pci pck pcp pcr pcs pcu pec pee pef peg pei pek pep per pes peu pfc pfe pff pfg pfi pfk pfp pfr pfs pfu pgc pge pgf pgg pgi pgk pgp pgr pgs pic pie pif pig pii pik pip pir pis piu pkc pke pkf pkg pki pkp pkr pks pku ppc ppe ppf ppg ppi ppk ppp ppr pps ppu prc pre prf prg pri prk prp prr prs pru ps- psc pse psf psg psi psk psp psr pss psu puc pue puf pug pui puk pup pur pus puu rcc rce rcf rcg rci rcp rcr rcs rcu re- rec ree ref reg rei rek rep rer res reu rfc rfe rff rfg rfi rfk rfp rfr rfs rfu rgc rge rgf rgg rgi rgk rgp rgr rgs ric rie rif rig rii rik rip rir ris rkc rke rkf rkg rkk rkp rks rku rpc rpe rpf rpg rpi rpk rpp rpr rps rpu rrc rrf rrg rri rrk rrp rrr rrs rru rsc rse rsf rsg rsi rsk rsp rsr rss rsu ruc rue ruf rug rui ruk rup rur rus ruu scc sce scf scg sci sck scp scr scs scu se- sec see sef seg sei sek sep ser ses seu sfc sfe sff sfg sfi sfk sfp sfr sfs sfu sgc sge sgf sgg sgi sgk sgp sgr sgs sgu sic sie sif sig sii sik sip sir sis siu sk- skc ske skf skg ski skk skp skr sks sku spc spe spf spg spi spk spp spr sps spu sr- src sre srf srg sri srk srp srr srs ss- ssc sse ssf ssg ssi ssk ssp ssr sss ssu suc sue suf sug sui suk sup sur sus suu ucc uce ucf ucg uci uck ucp ucr ucs ucu uec uee uef ueg uei uep uer ues ufc ufe uff ufg ufi ufp ufr ufs ufu ugc uge ugf ugg ugi ugk ugp ugr ugs ugu uic uie uif uig uii uip uir uis uiu ukc uke ukf uki ukk ukp ukr uku up- upc upe upf upg upi upk upp upr ups upu ur- urc ure urf urg uri urk urp urr urs uru usc use usf usg usi usk usp usr uss usu uuc uue uug uur uus uuu