-er -ic -up c-- ccc cce cci cck ccp ccr ccs ccu ce- cec cee cei cek cep cer ces ceu ci- cic cie cii cik cip cir cis ciu ckc cki cks cpc cpe cpi cpk cpp cpr cps cpu crc cre cri crk crp crr crs cru csc cse csi csk csp csr css csu cuc cue cui cuk cup cur cus cuu ec- ecc ece eci eck 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 epr eps epu erc ere eri erk erp err ers eru es- esc ese esi esk esp esr ess esu eu- euc eue eui eup eur eus icc ice ici ick icp 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 ir- irc ire iri irk irp irr irs iru is- isc ise isi isk isp 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 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 pcr pcs pcu pec pee pei pek pep per pes peu pic pie pii pik pip pir pis piu pkc pke pki pkp pkr pks pku ppc ppe ppi ppk ppp ppr pps ppu prc pre pri prk prp prr prs pru ps- psc pse psi psk psp psr pss psu puc pue pui puk pup pur pus puu rcc rce rci rcp rcr rcs rcu re- rec ree rei rek rep rer res reu ric rie rii rik rip rir ris rkc rke rkk rkp rks rku rpc rpe rpi rpk rpp rpr rps rpu rrc rri rrk rrp rrr rrs rru rsc rse rsi rsk rsp 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 ser ses seu sic sie sii sik sip sir sis siu sk- skc ske ski skk skp skr sks sku spc spe spi spk spp spr sps spu sr- src sre sri srk srp srr srs ss- ssc sse ssi ssk ssp ssr sss ssu suc sue sui suk sup sur sus suu ucc uce uci uck ucp ucr ucs ucu uec uee uei uep uer ues uic uie uii uip 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