-er -ic -ji c-- c-j ccc cce cci ccj cck cco ccr ce- cec cee cei cej cek ceo cer ci- cic cie cii cij cik cio cir cjc cjk cjr ckc cki cko co- coc coe coi coj cok coo cor crc cre cri crj crk cro crr ec- ecc ece eci ecj eck eco ecr eec eee eek eeo eer eic eie eii eij eik eio eir ejc eji ejo ekc eke eki eko ekr eo- eoc eoe eoi eok eoo eor erc ere eri erk ero err icc ice ici icj ick ico icr ie- iec iee iei iej iek ier iic iie iii iij iio iir ijc ije iji ijk ijo ikc ike iki ikk iko ikr io- ioc ioe ioi ioj ioo ior ir- irc ire iri irj irk iro irr j-i jcc jce jci jck jco jcr jec jee jei jej jek jeo jer jic jie jii jij jio jir jjc jjj jjk jjr jkk jko jkr joc joe joi joj jok joo jor jrc jri jrk jro jrr kcc kce kci kck kcr ke- kec kee kei kek keo ker kic kie kii kij kik kio kir kjc kje kji kjr kkc kke kki kkk kkr koc koe koi kok koo kor krc kri krk kro krr o-i oc- occ oci ocj ock oco ocr oec oee oei oeo oer oic oie oii oik oio oir ojc oje oji ojo okc oke oki okj okk oko okr oo- ooc ooi ook ooo oor or- orc ore ori ork oro orr rcc rce rci rcj rco rcr re- rec ree rei rek reo rer ric rie rii rik rio rir rjc rjk rjr rkc rke rkk rko roc roe roi roj rok roo ror rrc rri rrk rrr