a-a a-b aaa aab aad aak aan aas aay ab- aba abb abd abk abn abs aby ad- ada adb add adk adn ads ady aka akb akd akk akn aks an- ana anb and ank ann ans any as- asa asb asd ask asn ass asy ay- aya ayd ayk ayn ays baa bab bad bak ban bas bay bba bbb bbd bbk bbn bbs bby bda bdb bdd bdk bds bdy bka bkb bkk bkn bks bna bnb bnd bnk bnn bns bsa bsb bsd bsk bsn bss bsy by- bya byd byk byn bys daa dab dad dak dan das day dba dbb dbd dbk dbn dbs dby dda ddb ddd ddk ddn dds ddy dka dkb dkk dks dna dnb dnd dnk dnn dns dny dsa dsb dsd dsk dsn dss dsy dy- dya dyb dyd dyk dyn dys dyy ka- kaa kab kad kak kan kas kay kba kbb kbd kbk kbn kbs kda kdb kdk kds kdy kkb kkk kkn kks kky kn- kna knd knk knn ksa ksb ksd ksk ksn kss kya kyd kyn kys naa nab nad nak nan nas nay nba nbb nbd nbk nbn nbs nda ndb ndd ndk ndn nds ndy nka nkk nkn nks nky nna nnb nnk nnn nns nsa nsb nsd nsk nsn nss nsy nya nyd nyk nyn nys nyy saa sab sad sak san sas say sba sbb sbd sbk sbn sbs sby sda sdb sdd sdk sdn sds sdy sk- ska skb skd skk sks sky sna snb snd snk snn sns sny ss- ssa ssb ssd ssk ssn sss sy- sya syb syd syk syn sys yaa yab yad yak yan yas yay ybs yby yda ydn yds ydy yka ykk ykn yna ynd ynk ynn yns yny ysa ysb ysk yss ysy yyb yys yyy