a-a a-z aaa aah aak aao aar aas aaz aha ahh ahk aho ahr ahs ahz aka akh akk ako akr aks aoa aoh aok aoo aor aos ar- ara arh ark aro arr ars arz as- asa ash ask aso asr ass asz az- aza azo azs azz haa hah hak hao har has haz hha hhh hhk hho hhr hhs hhz hka hkh hkk hko hkr hks hoa hoh hok hoo hor hos hr- hra hrh hrk hro hrr hrs hrz hsa hsh hsk hsr hss hsz hzo hzs k-z ka- kaa kah kak kao kar kas kaz kha khh khk kho khr khs khz kkh kkk kkr kks koa koh kok koo kor kos koz kra krk kro krr krs ksa ksh ksk kso ksr kss kzo oaa oah oak oao oar oas oha ohh oho ohr ohs oka okk oko okr oks oo- ooa ooh ook ooo oor oos or- ora orh ork oro orr ors orz os- osa osh osk oso osr oss oza ozo ozs ozz ra- raa rah rak rao rar ras raz rh- rha rhh rho rhr rhs rkk rko rks rkz roa roh rok roo ror ros roz rra rrh rrk rrr rrs rsa rsh rsk rso rsr rss rza rzo saa sah sak sao sar sas saz sh- sha shh shk sho shr shs sk- ska skh skk sko skr sks soa soh sok soo sor sos soz sr- sra srh srk sro srr srs ss- ssa ssh ssk sso ssr sss ssz sza szr zaa zah zak zao zar zas zaz zha zho zhr zhs zka zks zo- zoa zok zoo zor zos zrh zro zrs zsa zsh zsz zzr zzs zzz