-er -ic c-- ccc cce cci cck ccr ccu ce- cec cee cei cek ceq cer ceu ci- cic cie cii cik ciq cir ciu ckc cki cqc cqi crc cre cri crk crq crr cru cuc cue cui cuk cuq cur cuu ec- ecc ece eci eck ecq ecr ecu eec eee eek eer eic eie eii eik eir eiu ekc eke eki ekr eku eqe eqq equ erc ere eri erk erq err eru eu- euc eue eui eur icc ice ici ick icq icr icu ie- iec iee iei iek ier iic iie iii iir iiu ikc ike iki ikk ikr iku iqc iqe iqu ir- irc ire iri irk irq irr iru iu- iuc iue iui iur kcc kce kci kck kcr kcu ke- kec kee kei kek ker kic kie kii kik kir kiu kkc kke kki kkk kkr kku krc kri krk krr kru kuc kue kui kuk kur kuu qcc qci qec qee qic qie qik qir qiu qki qqk qqq qqu qrc qre qri qru qu- que qui qur rcc rce rci rcr rcu re- rec ree rei rek req rer reu ric rie rii rik riq rir rkc rke rkk rku rqc rrc rri rrk rrq rrr rru ruc rue rui ruk rur ruu ucc uce uci uck ucr ucu uec uee uei uer uic uie uii uiq uir uiu ukc uke uki ukk ukr uku ur- urc ure uri urk urr uru uuc uue uur uuu