-ic a-a a-c a-i aaa aac aai aak aao aap aar ac- aca acc aci ack aco acp acr ai- aia aic aii aik aio aip air aka akc aki akk ako akp akr aoa aoc aoi aok aoo aop aor ap- apa apc api apk apo app apr ar- ara arc ari ark aro arp arr c-- caa cac cai cak cao cap car cca ccc cci cck cco ccp ccr ci- cia cic cii cik cio cip cir cka ckc cki cko co- coa coc coi cok coo cop cor cpa cpc cpi cpk cpo cpp cpr cra crc cri crk cro crp crr ia- iaa iac iai iao iap iar ica icc ici ick ico icp icr iia iic iii iio iip iir ika ikc iki ikk iko ikr io- ioa ioc ioi ioo iop ior ipa ipc ipi ipo ipp ipr ir- ira irc iri irk iro irp irr ka- kaa kac kai kak kao kap kar kca kcc kci kck kcp kcr kia kic kii kik kio kip kir kkc kki kkk kkp kkr koa koc koi kok koo kop kor kpa kpc kpi kpk kpo kpp kpr kra krc kri krk kro krp krr o-i oaa oac oai oak oao oap oar oc- oca occ oci ock oco ocp ocr oia oic oii oik oio oip oir oka okc oki okk oko okp okr oo- ooa ooc ooi ook ooo oop oor op- opa opc opi opk opo opp opr or- ora orc ori ork oro orp orr p-p paa pac pai pak pao pap par pca pcc pci pck pco pcp pcr pia pic pii pik pio pip pir pka pkc pki pko pkp pkr poa poc poi pok poo pop por ppa ppc ppi ppk ppo ppp ppr pra prc pri prk pro prp prr ra- raa rac rai rak rao rap rar rca rcc rci rco rcp rcr ria ric rii rik rio rip rir rkc rkk rko rkp roa roc roi rok roo rop ror rpa rpc rpi rpk rpo rpp rpr rra rrc rri rrk rrp rrr