a-a a-b a-i aaa aab aah aai aak aao aas ab- aba abb abh abi abk abo abs aha ahb ahh ahi ahk aho ahs ai- aia aib aih aii aik aio ais aka akb akh aki akk ako aks aoa aob aoh aoi aok aoo aos as- asa asb ash asi ask aso ass baa bab bah bai bak bao bas bba bbb bbh bbi bbk bbo bbs bha bhb bhh bhi bhk bho bhs bi- bia bib bih bii bik bio bis bka bkb bkk bko bks boa bob boh boi bok boo bos bsa bsb bsh bsi bsk bso bss h-i haa hab hah hai hak hao has hba hbb hbh hbi hbk hbo hbs hha hhb hhh hhi hhk hho hhs hia hib hih hii hik hio his hka hkb hkh hki hkk hko hks hoa hob hoh hoi hok hoo hos hsa hsb hsh hsi hsk hss ia- iaa iab iah iai iao ias iba ibb ibh ibi ibk ibo ibs iha ihb ihh ihi ihk iho ihs iia iib iih iii iio iis ika ikb iki ikk iko iks io- ioa iob ioh ioi ioo ios is- isa isb ish isi isk iso iss ka- kaa kab kah kai kak kao kas kba kbb kbh kbi kbk kbo kbs kha khh khi khk kho khs kia kib kih kii kik kio kis kkb kkh kki kkk kks koa kob koh koi kok koo kos ksa ksb ksh ksi ksk kso kss o-i oaa oab oah oai oak oao oas ob- oba obb obh obi obk obo obs oha ohh ohi oho ohs oia oib oii oik oio ois oka okb oki okk oko oks oo- ooa oob ooh ooi ook ooo oos os- osa osb osh osi osk oso oss saa sab sah sai sak sao sas sba sbb sbh sbi sbk sbo sbs sh- sha shb shh shi shk sho shs sia sib sih sii sik sio sis sk- ska skb skh ski skk sko sks soa sob soh soi sok soo sos ss- ssa ssb ssh ssi ssk sso sss