a-a a-c aaa aac aad aae aag aan aao ac- aca acc acd ace acg acn aco ad- ada adc add ade adg adn ado aea aec aed aee aeg aen aeo ag- aga agc agd age agg agn ago an- ana anc and ane ang ann ano aoa aoc aod aoe aog aon aoo c-- caa cac cad cae cag can cao cca ccc ccd cce ccg ccn cco cda cdc cdd cde cdg cdn cdo ce- cea cec ced cee ceg cen ceo cga cgc cgd cge cgg cgn cgo cn- cna cnc cnd cne cng cnn cno co- coa coc cod coe cog con coo daa dac dad dae dag dan dao dca dcc dcd dce dcg dcn dco dda ddc ddd dde ddg ddn ddo de- dea dec ded dee deg den deo dga dgc dgd dge dgg dgn dna dnc dnd dne dng dnn dno doa doc dod doe dog don doo eaa eac ead eae eag ean eao ec- eca ecc ecd ece ecg ecn eco ed- eda edc edd ede edg edn edo eea eec eed eee eeg een eeo ega egc egd ege egg egn ego en- ena enc end ene eng enn eno eo- eoa eoc eod eoe eog eon eoo g-d gaa gac gad gae gag gan gao gca gcc gcd gce gcg gcn gco gda gdc gdd gde gdn gdo ge- gea gec ged gee geg gen geo gga ggc ggd ggg ggn ggo gna gnc gnd gne gnn gno goa goc god goe gog gon goo naa nac nad nae nag nan nao nca ncc ncd nce ncg ncn nco nda ndc ndd nde ndg ndn ndo ne- nea nec ned nee neg nen neo nga ngc ngd nge ngg ngn ngo nna nnc nne nng nnn nno no- noa noc nod noe nog non noo oaa oac oad oae oag oan oao oc- oca occ ocd ocg ocn oco oda odc odd ode odg odn odo oea oec oed oee oeg oen oeo oga ogc ogd oge ogg ogn ogo on- ona onc ond one ong onn ono oo- ooa ooc ood oog oon ooo