-ic a-a a-c a-i aaa aac aai aak aao aar aas ac- aca acc aci ack aco acr acs ai- aia aic aii aik aio air ais aka akc aki akk ako akr aks aoa aoc aoi aok aoo aor aos ar- ara arc ari ark aro arr ars as- asa asc asi ask aso asr ass c-- caa cac cai cak cao car cas cca ccc cci cck cco ccr ccs ci- cia cic cii cik cio cir cis cka ckc cki cko cks co- coa coc coi cok coo cor cos cra crc cri crk cro crr crs csa csc csi csk cso csr css ia- iaa iac iai iao iar ias ica icc ici ick ico icr ics iia iic iii iio iir iis ika ikc iki ikk iko ikr iks io- ioa ioc ioi ioo ior ios ir- ira irc iri irk iro irr irs is- isa isc isi isk iso isr iss ka- kaa kac kai kak kao kar kas kca kcc kci kck kcr kcs kia kic kii kik kio kir kis kkc kki kkk kkr kks koa koc koi kok koo kor kos kra krc kri krk kro krr krs ksa ksc ksi ksk kso ksr kss o-i oaa oac oai oak oao oar oas oc- oca occ oci ock oco ocr ocs oia oic oii oik oio oir ois oka okc oki okk oko okr oks oo- ooa ooc ooi ook ooo oor oos or- ora orc ori ork oro orr ors os- osa osc osi osk oso osr oss ra- raa rac rai rak rao rar ras rca rcc rci rco rcr rcs ria ric rii rik rio rir ris rkc rkk rko rks roa roc roi rok roo ror ros rra rrc rri rrk rrr rrs rsa rsc rsi rsk rso rsr rss saa sac sai sak sao sar sas sca scc sci sck sco scr scs sia sic sii sik sio sir sis sk- ska skc ski skk sko skr sks soa soc soi sok soo sor sos sr- sra src sri srk sro srr srs ss- ssa ssc ssi ssk sso ssr sss