-er -ic c-- ccc cce cci cck ccm ccr ccs ccu ce- cec cee cei cek cem cer ces ceu ci- cic cie cii cik cim cir cis ciu ckc cki ckm cks cmc cme cmi cmk cmm cmr cms cmu crc cre cri crk crm crr crs cru csc cse csi csk csm csr css csu cuc cue cui cuk cum cur cus cuu ec- ecc ece eci eck ecm ecr ecs ecu eec eee eek eem eer ees eic eie eii eik eim eir eis eiu ekc eke eki ekr eks eku em- emc eme emi emk emm emr ems emu erc ere eri erk erm err ers eru es- esc ese esi esk esm esr ess esu eu- euc eue eui eur eus icc ice ici ick icm icr ics icu ie- iec iee iei iek iem ier ies iic iie iii iim iir iis iiu ikc ike iki ikk ikr iks iku im- imc ime imi imm ims imu ir- irc ire iri irk irm irr irs iru is- isc ise isi isk ism isr iss isu iu- iuc iue iui ium iur ius kcc kce kci kck kcm kcr kcs kcu ke- kec kee kei kek kem ker kes kic kie kii kik kim kir kis kiu kkc kke kki kkk kkm kkr kks kku kmc kme kmi kmk kmm kms kmu krc kri krk krr krs kru ksc kse ksi ksk ksm ksr kss ksu kuc kue kui kuk kum kur kus kuu m-r mc- mcc mce mci mck mcm mcr mcs mcu mec mee mei mek mem mer mes meu mi- mic mie mii mik mim mir mis miu mkc mke mkk mkm mkr mks mku mmc mme mmi mmk mmm mmr mms mmu mrc mre mri mrk mrm mrr mrs mru msc mse msi msk msm msr mss msu muc mue mui muk mum mur mus muu rcc rce rci rcm rcr rcs rcu re- rec ree rei rek rem rer res reu ric rie rii rik rim rir ris rkc rke rkk rkm rks rku rmc rme rmi rmm rmr rms rrc rri rrk rrm rrr rrs rru rsc rse rsi rsk rsm rsr rss rsu ruc rue rui ruk rum rur rus ruu scc sce sci sck scm scr scs scu se- sec see sei sek sem ser ses seu sic sie sii sik sim sir sis siu sk- skc ske ski skk skm skr sks sku smc sme smi smk smm smr sms smu sr- src sre sri srk srm srr srs ss- ssc sse ssi ssk ssm ssr sss ssu suc sue sui suk sum sur sus suu ucc uce uci uck ucm ucr ucs ucu uec uee uei uem uer ues uic uie uii uim uir uis uiu ukc uke uki ukk ukr uku um- umc ume umi umm umr ums umu ur- urc ure uri urk urm urr urs uru usc use usi usk usm usr uss usu uuc uue uum uur uus uuu