a-a aaa aaf aah aak aan aao aas af- afa aff afh afk afn afo afs aha ahf ahh ahk ahn aho ahs aka akh akk akn ako aks an- ana anf anh ank ann ano ans aoa aof aoh aok aon aoo aos as- asa asf ash ask asn aso ass faa faf fah fak fan fao fas ffa fff ffh ffk ffn ffo ffs fha fhf fhh fhn fho fhs fka fkf fkk fna fnf fnh fnk fnn fns foa fof foh fok fon foo fos fsa fsf fsh fsk fsn fso fss haa haf hah hak han hao has hfa hff hfh hfk hfn hfo hfs hha hhf hhh hhk hhn hho hhs hka hkf hkh hkk hkn hko hks hna hnf hnh hnk hnn hno hns hoa hof hoh hok hon hoo hos hsa hsf hsh hsk hsn hss ka- kaa kaf kah kak kan kao kas kfa kff kfh kfo kfs kha khf khh khk khn kho khs kkh kkk kkn kks kn- kna knf knk knn kno koa kof koh kok kon koo kos ksa ksf ksh ksk ksn kso kss naa naf nah nak nan nao nas nfa nff nfk nfn nfo nfs nha nhf nhh nhk nhn nhs nka nkf nkk nkn nko nks nna nnf nnh nnk nnn nno nns no- noa nof noh nok non noo nos nsa nsf nsh nsk nsn nso nss oaa oaf oah oak oan oao oas of- ofa off ofn ofo ofs oha ohf ohh ohn oho ohs oka okk oko oks on- ona onf onh onk onn ono ons oo- ooa oof ooh ook oon ooo oos os- osa osf osh osk osn oso oss saa saf sah sak san sao sas sfa sff sfh sfk sfn sfo sfs sh- sha shf shh shk shn sho shs sk- ska skf skh skk sko sks sna snf snk snn sno sns soa sof soh sok son soo sos ss- ssa ssf ssh ssk ssn sso sss