a-a a-b aaa aab aad aak aan aao aar aas aay ab- aba abb abd abk abn abo abr abs aby ad- ada adb add adk adn ado adr ads ady aka akb akd akk akn ako akr aks an- ana anb and ank ann ano anr ans any aoa aob aod aok aon aoo aor aos ar- ara arb ard ark arn aro arr ars ary as- asa asb asd ask asn aso asr ass asy ay- aya ayd ayk ayn ayo ayr ays baa bab bad bak ban bao bar bas bay bba bbb bbd bbk bbn bbo bbr bbs bby bda bdb bdd bdk bdo bdr bds bdy bka bkb bkk bkn bko bkr bks bna bnb bnd bnk bnn bno bnr bns boa bob bod bok bon boo bor bos boy bra brb brd brk brn bro brr brs bry bsa bsb bsd bsk bsn bso bsr bss bsy by- bya byd byk byn byo byr bys daa dab dad dak dan dao dar das day dba dbb dbd dbk dbn dbo dbr dbs dby dda ddb ddd ddk ddn ddo ddr dds ddy dka dkb dkk dko dkr dks dna dnb dnd dnk dnn dno dnr dns dny doa dob dod dok don doo dor dos doy dra drb drd drk drn dro drr drs dry dsa dsb dsd dsk dsn dso dsr dss dsy dy- dya dyb dyd dyk dyn dyo dyr dys dyy ka- kaa kab kad kak kan kao kar kas kay kba kbb kbd kbk kbn kbo kbr kbs kda kdb kdk kdo kdr kds kdy kkb kkk kkn kkr kks kky kn- kna knd knk knn kno knr koa kob kod kok kon koo kor kos koy kra krd krk krn kro krr krs kry ksa ksb ksd ksk ksn kso ksr kss kya kyd kyn kyo kyr kys naa nab nad nak nan nao nar nas nay nba nbb nbd nbk nbn nbo nbr nbs nda ndb ndd ndk ndn ndo ndr nds ndy nka nkk nkn nko nkr nks nky nna nnb nnk nnn nno nns no- noa nob nod nok non noo nor nos noy nra nrb nrd nrk nrn nro nrr nrs nry nsa nsb nsd nsk nsn nso nsr nss nsy nya nyd nyk nyn nyo nys nyy oaa oab oad oak oan oao oar oas ob- oba obb obd obk obn obo obr obs oby oda odb odd odn odo odr ods oka okb okd okk oko okr oks on- ona onb ond onk onn ono onr ons ony oo- ooa oob ood ook oon ooo oor oos or- ora orb ord ork orn oro orr ors ory os- osa osb osd osk osn oso osr oss oya oyd oyo oys ra- raa rab rad rak ran rao rar ras ray rba rbb rbd rbk rbn rbo rbr rbs rda rdb rdd rdn rdo rdr rds rdy rkb rkk rko rks rky rna rnb rnd rnn rno rnr rns rny roa rob rod rok ron roo ror ros roy rra rrb rrd rrk rrn rrr rrs rsa rsb rsd rsk rsn rso rsr rss ry- rya ryd ryk ryn ryo ryr rys ryy saa sab sad sak san sao sar sas say sba sbb sbd sbk sbn sbo sbr sbs sby sda sdb sdd sdk sdn sdo sdr sds sdy sk- ska skb skd skk sko skr sks sky sna snb snd snk snn sno snr sns sny soa sob sod sok son soo sor sos soy sr- sra srb srd srk srn sro srr srs sry ss- ssa ssb ssd ssk ssn sso ssr sss sy- sya syb syd syk syn syr sys yaa yab yad yak yan yao yar yas yay ybr ybs yby yda ydn ydo yds ydy yka ykk ykn yna ynd ynk ynn yns yny yob yod yok yon yoo yor yos yoy yra yrn yro yrs ysa ysb ysk yso ysr yss ysy yyb yys yyy