a-a a-c a-z aaa aac aaf aag aao aar aay aaz ac- aca acc acf acg aco acr acy acz af- afa afc aff afg afo afr afy afz ag- aga agc agf agg ago agr agy agz aoa aoc aof aog aoo aor ar- ara arc arf arg aro arr ary arz ay- aya ayc ayf ayo ayr ayz az- aza azf azg azo azy azz c-- caa cac caf cag cao car cay caz cca ccc ccf ccg cco ccr ccz cfa cfc cff cfg cfo cfr cfz cga cgc cgg cgo cgr cgy co- coa coc cof cog coo cor coy coz cra crc crf crg cro crr cry crz cya cyc cyf cyg cyo cyr cz- czc czo faa fac faf fag fao far fay faz fca fcc fcf fcg fco fcr fcy fcz ffa ffc fff ffg ffo ffr ffy ffz fga fgc fgf fgg fgr fgz foa foc fof fog foo for foy foz fra frc frf frg fro frr fry fy- fya fyc fyo fyz gaa gac gaf gag gao gar gay gaz gca gcc gcf gcg gco gcr gfa gfc gff gfo gfr gfy gfz gga ggc ggg ggo ggr ggz goa goc gof gog goo gor goy goz gra grc grf grg gro grr gry gy- gya gyf gyo gyr gza gzo gzr oaa oac oaf oag oao oar oc- oca occ ocf ocg oco ocr ocz of- ofa ofc off ofg ofo ofr ofz oga ogc ogf ogg ogo ogy oo- ooa ooc oof oog ooo oor or- ora orc orf org oro orr ory orz oya oyo oza ozo ozz ra- raa rac raf rag rao rar ray raz rca rcc rcf rcg rco rcr rfa rfc rff rfg rfo rfr rfz rga rgc rgf rgg rgo rgr roa roc rof rog roo ror roy roz rra rrc rrf rrg rrr ry- rya ryc ryf ryg ryo ryr ryy ryz rza rzo rzy yaa yac yaf yag yao yar yay yaz yca ycc ycf yco ycy yfa yfc yff yfr yga ygc ygo yoc yof yog yoo yor yoy yra yrc yrf yrg yro yyc yyf yyg yyy yyz yzf yzr yzy z-g zaa zac zaf zag zao zar zay zaz zco zfa zfc zfr zfy zgg zo- zoa zoc zof zog zoo zor zro zzr zzy zzz