-ic a-a a-c a-i aaa aac aag aai aak aao aar ac- aca acc acg aci ack aco acr ag- aga agc agg agi agk ago agr ai- aia aic aig aii aik aio air aka akc akg aki akk ako akr aoa aoc aog aoi aok aoo aor ar- ara arc arg ari ark aro arr c-- caa cac cag cai cak cao car cca ccc ccg cci cck cco ccr cga cgc cgg cgi cgo cgr ci- cia cic cig cii cik cio cir cka ckc cki cko co- coa coc cog coi cok coo cor cra crc crg cri crk cro crr gaa gac gag gai gak gao gar gca gcc gcg gci gck gco gcr gga ggc ggg ggi ggo ggr gia gic gig gii gik gio gir gka gko goa goc gog goi gok goo gor gra grc grg gri grk gro grr ia- iaa iac iag iai iao iar ica icc icg ici ick ico icr iga igc igg igi igk igo igr iia iic iii iio iir ika ikc iki ikk iko ikr io- ioa ioc iog ioi ioo ior ir- ira irc irg iri irk iro irr ka- kaa kac kag kai kak kao kar kca kcc kcg kci kck kcr kga kgc kgi kgo kia kic kig kii kik kio kir kkc kki kkk kkr koa koc kog koi kok koo kor kra krc krg kri krk kro krr o-i oaa oac oag oai oak oao oar oc- oca occ ocg oci ock oco ocr oga ogc ogg ogi ogo oia oic oii oik oio oir oka okc okg oki okk oko okr oo- ooa ooc oog ooi ook ooo oor or- ora orc org ori ork oro orr ra- raa rac rag rai rak rao rar rca rcc rcg rci rco rcr rga rgc rgg rgi rgk rgo rgr ria ric rig rii rik rio rir rkc rkg rkk rko roa roc rog roi rok roo ror rra rrc rrg rri rrk rrr