-er -ic c-- ccc cce cci cck ccr ccu ccv ce- cec cee cei cek cer ceu cev ci- cic cie cii cik cir ciu civ ckc cki crc cre cri crk crr cru crv cuc cue cui cuk cur cuu cuv cvc cve cvi cvk cvr cvu cvv ec- ecc ece eci eck ecr ecu ecv eec eee eek eer eev eic eie eii eik eir eiu eiv ekc eke eki ekr eku ekv erc ere eri erk err eru erv eu- euc eue eui eur euv evc eve evi evr evv i-v icc ice ici ick icr icu icv ie- iec iee iei iek ier iev iic iie iii iir iiu ikc ike iki ikk ikr iku ikv ir- irc ire iri irk irr iru irv iu- iuc iue iui iur ivc ive ivi ivr ivu ivv kcc kce kci kck kcr kcu ke- kec kee kei kek ker kev kic kie kii kik kir kiu kiv kkc kke kki kkk kkr kku kkv krc kri krk krr kru krv kuc kue kui kuk kur kuu kvi kvk kvr kvv rcc rce rci rcr rcu rcv re- rec ree rei rek rer reu rev ric rie rii rik rir riv rkc rke rkk rku rkv rrc rri rrk rrr rru ruc rue rui ruk rur ruu ruv rvc rve rvi rvr rvu rvv ucc uce uci uck ucr ucu ucv uec uee uei uer uic uie uii uir uiu ukc uke uki ukk ukr uku ur- urc ure uri urk urr uru uuc uue uur uuu uvc uve uvu uvv v-e vcc vce vci vcr vcu vec vee vei vek ver veu vi- vic vie vii vik vir viu viv vrc vre vri vrk vrr vru vue vuk vur vuv vvc vvi vvr vvv