a-a a-c aaa aac aad aag aak aao aar ac- aca acc acd acg ack aco acr ad- ada adc add adg adk ado adr ag- aga agc agd agg agk ago agr aka akc akd akg akk ako akr aoa aoc aod aog aok aoo aor ar- ara arc ard arg ark aro arr c-- caa cac cad cag cak cao car cca ccc ccd ccg cck cco ccr cda cdc cdd cdg cdk cdo cdr cga cgc cgd cgg cgo cgr cka ckc ckd cko co- coa coc cod cog cok coo cor cra crc crd crg crk cro crr daa dac dad dag dak dao dar dca dcc dcd dcg dck dco dcr dda ddc ddd ddg ddk ddo ddr dga dgc dgd dgg dgk dgr dka dkc dkg dkk dko dkr doa doc dod dog dok doo dor dra drc drd drg drk dro drr g-d gaa gac gad gag gak gao gar gca gcc gcd gcg gck gco gcr gda gdc gdd gdk gdo gdr gga ggc ggd ggg ggo ggr gka gkd gko goa goc god gog gok goo gor gra grc grd grg grk gro grr ka- kaa kac kad kag kak kao kar kca kcc kcd kcg kck kcr kda kdc kdg kdk kdo kdr kga kgc kgd kgo kkc kkk kkr koa koc kod kog kok koo kor kra krc krd krg krk kro krr oaa oac oad oag oak oao oar oc- oca occ ocd ocg ock oco ocr oda odc odd odg odo odr oga ogc ogd ogg ogo oka okc okd okg okk oko okr oo- ooa ooc ood oog ook ooo oor or- ora orc ord org ork oro orr ra- raa rac rad rag rak rao rar rca rcc rcd rcg rco rcr rda rdc rdd rdg rdo rdr rga rgc rgd rgg rgk rgo rgr rkc rkg rkk rko roa roc rod rog rok roo ror rra rrc rrd rrg rrk rrr