a-a a-b a-i aaa aab aah aai aao aas aay ab- aba abb abh abi abo abs aby aha ahb ahh ahi aho ahs ahy ai- aia aib aih aii aio ais aiy aoa aob aoh aoi aoo aos as- asa asb ash asi aso ass asy ay- aya ayh ayi ayo ays baa bab bah bai bao bas bay bba bbb bbh bbi bbo bbs bby bha bhb bhh bhi bho bhs bi- bia bib bih bii bio bis biy boa bob boh boi boo bos boy bsa bsb bsh bsi bso bss bsy by- bya byh byi byo bys h-i haa hab hah hai hao has hay hba hbb hbh hbi hbo hbs hby hha hhb hhh hhi hho hhs hhy hia hib hih hii hio his hoa hob hoh hoi hoo hos hoy hsa hsb hsh hsi hss hsy hy- hya hyb hyh hyi hyo hys hyy ia- iaa iab iah iai iao ias iba ibb ibh ibi ibo ibs iby iha ihb ihh ihi iho ihs ihy iia iib iih iii iio iis io- ioa iob ioh ioi ioo ios is- isa isb ish isi iso iss isy iya iyo iys iyy o-i oaa oab oah oai oao oas ob- oba obb obh obi obo obs oby oha ohh ohi oho ohs oia oib oii oio ois oo- ooa oob ooh ooi ooo oos os- osa osb osh osi oso oss oya oyi oyo oys saa sab sah sai sao sas say sba sbb sbh sbi sbo sbs sby sh- sha shb shh shi sho shs shy sia sib sih sii sio sis soa sob soh soi soo sos soy ss- ssa ssb ssh ssi sso sss sy- sya syb syh syi sys yaa yab yah yai yao yas yay ybi ybs yby yha yhi yhs yih yii yio yis yob yoi yoo yos yoy ysa ysb ysi yso yss ysy yyb yys yyy