a-a a-b aaa aab aad aag aak aao aas aay ab- aba abb abd abg abk abo abs aby ad- ada adb add adg adk ado ads ady ag- aga agb agd agg agk ago ags agy aka akb akd akg akk ako aks aoa aob aod aog aok aoo aos as- asa asb asd asg ask aso ass asy ay- aya ayd ayk ayo ays baa bab bad bag bak bao bas bay bba bbb bbd bbg bbk bbo bbs bby bda bdb bdd bdg bdk bdo bds bdy bga bgb bgd bgg bgk bgo bgs bka bkb bkg bkk bko bks boa bob bod bog bok boo bos boy bsa bsb bsd bsg bsk bso bss bsy by- bya byd byg byk byo bys daa dab dad dag dak dao das day dba dbb dbd dbg dbk dbo dbs dby dda ddb ddd ddg ddk ddo dds ddy dga dgd dgg dgk dgs dka dkb dkg dkk dko dks doa dob dod dog dok doo dos doy dsa dsb dsd dsg dsk dso dss dsy dy- dya dyb dyd dyk dyo dys dyy g-d gaa gab gad gag gak gao gas gay gba gbd gbg gbk gbo gbs gby gda gdb gdd gdk gdo gds gga ggb ggd ggg ggo ggs gka gkb gkd gko gks goa gob god gog gok goo gos goy gsa gsb gsd gsg gsk gso gss gy- gya gyb gyd gyo gys ka- kaa kab kad kag kak kao kas kay kba kbb kbd kbk kbo kbs kda kdb kdg kdk kdo kds kdy kga kgb kgd kgo kgs kgy kkb kkk kks kky koa kob kod kog kok koo kos koy ksa ksb ksd ksg ksk kso kss kya kyd kyo kys oaa oab oad oag oak oao oas ob- oba obb obd obg obk obo obs oby oda odb odd odg odo ods oga ogd ogg ogo ogs ogy oka okb okd okg okk oko oks oo- ooa oob ood oog ook ooo oos os- osa osb osd osg osk oso oss oya oyd oyo oys saa sab sad sag sak sao sas say sba sbb sbd sbg sbk sbo sbs sby sda sdb sdd sdg sdk sdo sds sdy sga sgb sgd sgg sgk sgo sgs sk- ska skb skd skg skk sko sks sky soa sob sod sog sok soo sos soy ss- ssa ssb ssd ssg ssk sso sss sy- sya syb syd syg syk sys yaa yab yad yag yak yao yas yay ybg ybs yby yda ydg ydo yds ydy yga ygo yka ykk yob yod yog yok yoo yos yoy ysa ysb ysg ysk yso yss ysy yyb yyg yys yyy