-er -ic -up c-- ccc cce cci ccp ccr ccs ccu ce- cec cee cei cep cer ces ceu ci- cic cie cii cip cir cis ciu cpc cpe cpi cpp cpr cps cpu crc cre cri crp crr crs cru csc cse csi csp csr css csu cuc cue cui cup cur cus cuu ec- ecc ece eci ecr ecs ecu eec eee eep eer ees eic eie eii eip eir eis eiu ep- epc epe epi epp epr eps epu erc ere eri erp err ers eru es- esc ese esi esp esr ess esu eu- euc eue eui eup eur eus icc ice ici icp icr ics icu ie- iec iee iei iep ier ies iic iie iii iip iir iis iiu ipc ipe ipi ipp ipr ips ipu ir- irc ire iri irp irr irs iru is- isc ise isi isp isr iss isu iu- iuc iue iui iup iur ius p-p pcc pce pci pcp pcr pcs pcu pec pee pei pep per pes peu pic pie pii pip pir pis piu ppc ppe ppi ppp ppr pps ppu prc pre pri prp prr prs pru ps- psc pse psi psp psr pss psu puc pue pui pup pur pus puu rcc rce rci rcp rcr rcs rcu re- rec ree rei rep rer res reu ric rie rii rip rir ris rpc rpe rpi rpp rpr rps rpu rrc rri rrp rrr rrs rru rsc rse rsi rsp rsr rss rsu ruc rue rui rup rur rus ruu scc sce sci scp scr scs scu se- sec see sei sep ser ses seu sic sie sii sip sir sis siu spc spe spi spp spr sps spu sr- src sre sri srp srr srs ss- ssc sse ssi ssp ssr sss ssu suc sue sui sup sur sus suu ucc uce uci ucp ucr ucs ucu uec uee uei uep uer ues uic uie uii uip uir uis uiu up- upc upe upi upp upr ups upu ur- urc ure uri urp urr urs uru usc use usi usp usr uss usu uuc uue uur uus uuu