a-a a-c a-z aaa aac aak aao aar aay aaz ac- aca acc ack aco acr acy acz aka akc akk ako akr aoa aoc aok aoo aor ar- ara arc ark aro arr ary arz ay- aya ayc ayk ayo ayr ayz az- aza azo azy azz c-- caa cac cak cao car cay caz cca ccc cck cco ccr ccz cka ckc cko cky co- coa coc cok coo cor coy coz cra crc crk cro crr cry crz cya cyc cyk cyo cyr cz- czc czk czo k-z ka- kaa kac kak kao kar kay kaz kca kcc kck kcr kkc kkk kkr kky koa koc kok koo kor koy koz kra krc krk kro krr kry kya kyc kyo kyr kyz kzo kzy oaa oac oak oao oar oc- oca occ ock oco ocr ocz oka okc okk oko okr oo- ooa ooc ook ooo oor or- ora orc ork oro orr ory orz oya oyo oza ozo ozz ra- raa rac rak rao rar ray raz rca rcc rco rcr rkc rkk rko rky rkz roa roc rok roo ror roy roz rra rrc rrk rrr ry- rya ryc ryk ryo ryr ryy ryz rza rzo rzy yaa yac yak yao yar yay yaz yca ycc yco ycy yka ykk yoc yok yoo yor yoy yra yrc yro yyc yyy yyz yzr yzy zaa zac zak zao zar zay zaz zco zka zo- zoa zoc zok zoo zor zro zzr zzy zzz