-er -ic c-- ccc cce cci cck ccr ccv ccz ce- cec cee cei cek cer cev cez ci- cic cie cii cik cir civ ckc cki crc cre cri crk crr crv crz cvc cve cvi cvk cvr cvv cvz cz- czc cze czk ec- ecc ece eci eck ecr ecv eec eee eek eer eev eic eie eii eik eir eiv ekc eke eki ekr ekv erc ere eri erk err erv erz evc eve evi evr evv eze ezr ezz i-v icc ice ici ick icr icv icz ie- iec iee iei iek ier iev iic iie iii iir ikc ike iki ikk ikr ikv ir- irc ire iri irk irr irv ivc ive ivi ivr ivv ize izi izz k-z kcc kce kci kck kcr ke- kec kee kei kek ker kev kez kic kie kii kik kir kiv kiz kkc kke kki kkk kkr kkv krc kri krk krr krv kvi kvk kvr kvv rcc rce rci rcr rcv re- rec ree rei rek rer rev rez ric rie rii rik rir riv riz rkc rke rkk rkv rkz rrc rri rrk rrr rvc rve rvi rvr rvv rze v-e vcc vce vci vcr vec vee vei vek ver vez vi- vic vie vii vik vir viv viz vrc vre vri vrk vrr vvc vvi vvr vvv vvz zce zec zee zek zer zev zez zie zik zir ziv ziz zvi zzr zzz