a-a a-c aaa aac aad aae aag aak aao ac- aca acc acd ace acg ack aco ad- ada adc add ade adg adk ado aea aec aed aee aeg aek aeo ag- aga agc agd age agg agk ago aka akc akd ake akg akk ako aoa aoc aod aoe aog aok aoo c-- caa cac cad cae cag cak cao cca ccc ccd cce ccg cck cco cda cdc cdd cde cdg cdk cdo ce- cea cec ced cee ceg cek ceo cga cgc cgd cge cgg cgo cka ckc ckd cko co- coa coc cod coe cog cok coo daa dac dad dae dag dak dao dca dcc dcd dce dcg dck dco dda ddc ddd dde ddg ddk ddo de- dea dec ded dee deg dek deo dga dgc dgd dge dgg dgk dka dkc dke dkg dkk dko doa doc dod doe dog dok doo eaa eac ead eae eag eak eao ec- eca ecc ecd ece ecg eck eco ed- eda edc edd ede edg edk edo eea eec eed eee eeg eek eeo ega egc egd ege egg ego eka ekc ekd eke ekg eko eo- eoa eoc eod eoe eog eok eoo g-d gaa gac gad gae gag gak gao gca gcc gcd gce gcg gck gco gda gdc gdd gde gdk gdo ge- gea gec ged gee geg gek geo gga ggc ggd ggg ggo gka gkd gko goa goc god goe gog gok goo ka- kaa kac kad kae kag kak kao kca kcc kcd kce kcg kck kda kdc kde kdg kdk kdo ke- kea kec ked kee keg kek keo kga kgc kgd kgo kkc kke kkk koa koc kod koe kog kok koo oaa oac oad oae oag oak oao oc- oca occ ocd ocg ock oco oda odc odd ode odg odo oea oec oed oee oeg oeo oga ogc ogd oge ogg ogo oka okc okd oke okg okk oko oo- ooa ooc ood oog ook ooo