a-a a-z aaa aak aao aar aas aay aaz aka akk ako akr aks aoa aok aoo aor aos ar- ara ark aro arr ars ary arz as- asa ask aso asr ass asy asz ay- aya ayk ayo ayr ays ayz az- aza azo azs azy azz k-z ka- kaa kak kao kar kas kay kaz kkk kkr kks kky koa kok koo kor kos koy koz kra krk kro krr krs kry ksa ksk kso ksr kss kya kyo kyr kys kyz kzo kzy oaa oak oao oar oas oka okk oko okr oks oo- ooa ook ooo oor oos or- ora ork oro orr ors ory orz os- osa osk oso osr oss oya oyo oys oza ozo ozs ozz ra- raa rak rao rar ras ray raz rkk rko rks rky rkz roa rok roo ror ros roy roz rra rrk rrr rrs rsa rsk rso rsr rss ry- rya ryk ryo ryr rys ryy ryz rza rzo rzy saa sak sao sar sas say saz sk- ska skk sko skr sks sky soa sok soo sor sos soy soz sr- sra srk sro srr srs sry ss- ssa ssk sso ssr sss ssz sy- sya syk syr sys sza szr yaa yak yao yar yas yay yaz yka ykk yok yoo yor yos yoy yra yro yrs ysa ysk yso ysr yss ysy ysz yys yyy yyz yzr yzy zaa zak zao zar zas zay zaz zka zks zo- zoa zok zoo zor zos zro zrs zsa zsz zzr zzs zzy zzz