-er -ic -up c-- ccc cce cci cck ccp ccr ccs ccu ce- cec cee cei cek cep ceq cer ces ceu ci- cic cie cii cik cip ciq cir cis ciu ckc cki cks cpc cpe cpi cpk cpp cpq cpr cps cpu cqc cqi cqs crc cre cri crk crp crq crr crs cru csc cse csi csk csp csq csr css csu cuc cue cui cuk cup cuq cur cus cuu ec- ecc ece eci eck ecq ecr ecs ecu eec eee eek eep eer ees eic eie eii eik eip eir eis eiu ekc eke eki ekp ekr eks eku ep- epc epe epi epp epq epr eps epu eqe eqp eqq eqs equ erc ere eri erk erp erq err ers eru es- esc ese esi esk esp esq esr ess esu eu- euc eue eui eup eur eus icc ice ici ick icp icq icr ics icu ie- iec iee iei iek iep ier ies iic iie iii iip iir iis iiu ikc ike iki ikk ikr iks iku ipc ipe ipi ipp ipr ips ipu iqc iqe iqs iqu ir- irc ire iri irk irp irq irr irs iru is- isc ise isi isk isp isq isr iss isu iu- iuc iue iui iup iur ius kcc kce kci kck kcp kcr kcs kcu ke- kec kee kei kek kep ker kes kic kie kii kik kip kir kis kiu kkc kke kki kkk kkp kkr kks kku kpc kpe kpi kpk kpp kpq kpr kps kpu krc kri krk krp krr krs kru ksc kse ksi ksk ksp ksr kss ksu kuc kue kui kuk kup kur kus kuu p-p pcc pce pci pck pcp pcq pcr pcs pcu pec pee pei pek pep per pes peu pic pie pii pik pip piq pir pis piu pkc pke pki pkp pkr pks pku ppc ppe ppi ppk ppp ppq ppr pps ppu pqi pqq pqr pqs prc pre pri prk prp prq prr prs pru ps- psc pse psi psk psp psr pss psu puc pue pui puk pup pur pus puu qcc qci qcp qcs qec qee qep qic qie qik qip qir qis qiu qki qpc qpp qpr qps qqk qqq qqu qrc qre qri qrp qrs qru qsc qsi qsp qsr qu- que qui qur qus rcc rce rci rcp rcr rcs rcu re- rec ree rei rek rep req rer res reu ric rie rii rik rip riq rir ris rkc rke rkk rkp rks rku rpc rpe rpi rpk rpp rpr rps rpu rqc rqs rrc rri rrk rrp rrq rrr rrs rru rsc rse rsi rsk rsp rsq rsr rss rsu ruc rue rui ruk rup rur rus ruu scc sce sci sck scp scr scs scu se- sec see sei sek sep seq ser ses seu sic sie sii sik sip siq sir sis siu sk- skc ske ski skk skp skq skr sks sku spc spe spi spk spp spq spr sps spu sqi sqq sqr sqs sr- src sre sri srk srp srq srr srs ss- ssc sse ssi ssk ssp ssq ssr sss ssu suc sue sui suk sup suq sur sus suu ucc uce uci uck ucp ucr ucs ucu uec uee uei uep uer ues uic uie uii uip uiq uir uis uiu ukc uke uki ukk ukp ukr uku up- upc upe upi upk upp upr ups upu ur- urc ure uri urk urp urr urs uru usc use usi usk usp usr uss usu uuc uue uur uus uuu