-er -ic c-- ccc cce cci cck ccr ccs ccu ccv ce- cec cee cei cek cer ces ceu cev ci- cic cie cii cik cir cis ciu civ ckc cki cks crc cre cri crk crr crs cru crv csc cse csi csk csr css csu csv cuc cue cui cuk cur cus cuu cuv cvc cve cvi cvk cvr cvs cvu cvv ec- ecc ece eci eck ecr ecs ecu ecv eec eee eek eer ees eev eic eie eii eik eir eis eiu eiv ekc eke eki ekr eks eku ekv erc ere eri erk err ers eru erv es- esc ese esi esk esr ess esu esv eu- euc eue eui eur eus euv evc eve evi evr evs evv i-v icc ice ici ick icr ics icu icv ie- iec iee iei iek ier ies iev iic iie iii iir iis iiu ikc ike iki ikk ikr iks iku ikv ir- irc ire iri irk irr irs iru irv is- isc ise isi isk isr iss isu isv iu- iuc iue iui iur ius ivc ive ivi ivr ivs ivu ivv kcc kce kci kck kcr kcs kcu ke- kec kee kei kek ker kes kev kic kie kii kik kir kis kiu kiv kkc kke kki kkk kkr kks kku kkv krc kri krk krr krs kru krv ksc kse ksi ksk ksr kss ksu ksv kuc kue kui kuk kur kus kuu kvi kvk kvr kvs kvv rcc rce rci rcr rcs rcu rcv re- rec ree rei rek rer res reu rev ric rie rii rik rir ris riv rkc rke rkk rks rku rkv rrc rri rrk rrr rrs rru rsc rse rsi rsk rsr rss rsu rsv ruc rue rui ruk rur rus ruu ruv rvc rve rvi rvr rvs rvu rvv scc sce sci sck scr scs scu scv se- sec see sei sek ser ses seu sev sic sie sii sik sir sis siu siv sk- skc ske ski skk skr sks sku sr- src sre sri srk srr srs srv ss- ssc sse ssi ssk ssr sss ssu ssv suc sue sui suk sur sus suu suv svc sve svi svk svr svs svu svv ucc uce uci uck ucr ucs ucu ucv uec uee uei uer ues uic uie uii uir uis uiu ukc uke uki ukk ukr uku ur- urc ure uri urk urr urs uru usc use usi usk usr uss usu usv uuc uue uur uus uuu uvc uve uvs uvu uvv v-e vcc vce vci vcr vcs vcu vec vee vei vek ver ves veu vi- vic vie vii vik vir vis viu viv vrc vre vri vrk vrr vrs vru vsc vse vsi vsk vsr vss vsu vsv vue vuk vur vus vuv vvc vvi vvr vvs vvv