a-a a-c aaa aac aad aag aao aar ac- aca acc acd acg aco acr ad- ada adc add adg ado adr ag- aga agc agd agg ago agr aoa aoc aod aog aoo aor ar- ara arc ard arg aro arr c-- caa cac cad cag cao car cca ccc ccd ccg cco ccr cda cdc cdd cdg cdo cdr cga cgc cgd cgg cgo cgr co- coa coc cod cog coo cor cra crc crd crg cro crr daa dac dad dag dao dar dca dcc dcd dcg dco dcr dda ddc ddd ddg ddo ddr dga dgc dgd dgg dgr doa doc dod dog doo dor dra drc drd drg dro drr g-d gaa gac gad gag gao gar gca gcc gcd gcg gco gcr gda gdc gdd gdo gdr gga ggc ggd ggg ggo ggr goa goc god gog goo gor gra grc grd grg gro grr oaa oac oad oag oao oar oc- oca occ ocd ocg oco ocr oda odc odd odg odo odr oga ogc ogd ogg ogo oo- ooa ooc ood oog ooo oor or- ora orc ord org oro orr ra- raa rac rad rag rao rar rca rcc rcd rcg rco rcr rda rdc rdd rdg rdo rdr rga rgc rgd rgg rgo rgr roa roc rod rog roo ror rra rrc rrd rrg rrr