a-a a-c a-z aaa aac aaf aao aar aau aay aaz ac- aca acc acf aco acr acu acy acz af- afa afc aff afo afr afu afy afz aoa aoc aof aoo aor aou ar- ara arc arf aro arr aru ary arz au- aua auc auf auo aur auz ay- aya ayc ayf ayo ayr ayu ayz az- aza azf azo azu azy azz c-- caa cac caf cao car cau cay caz cca ccc ccf cco ccr ccu ccz cfa cfc cff cfo cfr cfu cfz co- coa coc cof coo cor cou coy coz cra crc crf cro crr cru cry crz cua cuc cuf cuo cur cuu cuy cuz cya cyc cyf cyo cyr cz- czc czo faa fac faf fao far fau fay faz fca fcc fcf fco fcr fcu fcy fcz ffa ffc fff ffo ffr ffu ffy ffz foa foc fof foo for fou foy foz fra frc frf fro frr fru fry fua fuf fuo fur fuu fy- fya fyc fyo fyz oaa oac oaf oao oar oau oc- oca occ ocf oco ocr ocu ocz of- ofa ofc off ofo ofr ofu ofz oo- ooa ooc oof ooo oor or- ora orc orf oro orr oru ory orz ou- oua ouc ouf ouo our oya oyo oza ozo ozu ozz ra- raa rac raf rao rar rau ray raz rca rcc rcf rco rcr rcu rfa rfc rff rfo rfr rfu rfz roa roc rof roo ror rou roy roz rra rrc rrf rrr rru rua ruc ruf ruo rur ruu ruy ruz ry- rya ryc ryf ryo ryr ryu ryy ryz rza rzo rzy ua- uaa uac uaf uao uar uau uay uaz uca ucc ucf uco ucr ucu ufa ufc uff ufo ufr ufu uoa uoc uoo uor ur- ura urc urf uro urr uru ury urz uua uuc uur uuu uyc uyo uyu uza uzo uzu yaa yac yaf yao yar yau yay yaz yca ycc ycf yco ycu ycy yfa yfc yff yfr yfu yoc yof yoo yor you yoy yra yrc yrf yro yru yua yuo yur yuu yuy yyc yyf yyu yyy yyz yzf yzr yzu yzy zaa zac zaf zao zar zay zaz zco zfa zfc zfr zfy zo- zoa zoc zof zoo zor zou zro zuc zur zuz zzr zzy zzz