a-a a-b aaa aab aak aan aao aas aau aav aay ab- aba abb abk abn abo abs abu abv aby aka akb akk akn ako aks aku akv an- ana anb ank ann ano ans anu anv any aoa aob aok aon aoo aos aou aov as- asa asb ask asn aso ass asu asv asy au- aua aub auk aun auo aus auv av- ava avb avk avn avo avs avu avy ay- aya ayk ayn ayo ays ayu b-u baa bab bak ban bao bas bau bav bay bba bbb bbk bbn bbo bbs bbu bby bka bkb bkk bkn bko bks bkv bna bnb bnk bnn bno bns bnu bnv boa bob bok bon boo bos bou bov boy bsa bsb bsk bsn bso bss bsu bsv bsy bua bub buk bun buo bus buu buy bva bvb bvk bvn bvo bvs bvu bvv by- bya byk byn byo bys byu ka- kaa kab kak kan kao kas kau kav kay kba kbb kbk kbn kbo kbs kbu kkb kkk kkn kks kku kkv kky kn- kna knk knn kno knu koa kob kok kon koo kos kou koy ksa ksb ksk ksn kso kss ksu ksv kub kuk kun kus kuu kuy kva kvb kvk kvn kvo kvs kvv kya kyn kyo kys kyu naa nab nak nan nao nas nau nav nay nba nbb nbk nbn nbo nbs nbu nbv nka nkk nkn nko nks nku nky nna nnb nnk nnn nno nns nnu nnv no- noa nob nok non noo nos nou nov noy nsa nsb nsk nsn nso nss nsu nsv nsy nua nub nuk nun nuo nus nuu nuv nuy nva nvb nvk nvn nvu nvv nya nyk nyn nyo nys nyu nyy oaa oab oak oan oao oas oau oav ob- oba obb obk obn obo obs obu obv oby oka okb okk oko oks oku on- ona onb onk onn ono ons onu ony oo- ooa oob ook oon ooo oos oov os- osa osb osk osn oso oss osu osv ou- oua ouk oun ouo ous ov- ova ovb ovo ovs ovv oya oyo oys saa sab sak san sao sas sau sav say sba sbb sbk sbn sbo sbs sbu sbv sby sk- ska skb skk sko sks sku sky sna snb snk snn sno sns snu snv sny soa sob sok son soo sos sou sov soy ss- ssa ssb ssk ssn sso sss ssu ssv sua sub suk sun suo sus suu suv suy sva svb svk svn svo svs svu svv svy sy- sya syb syk syn sys syu ua- uaa uab uak uan uao uas uau uav uay uba ubb ubk ubn ubo ubs ubu ubv uby uka ukb ukk ukn uku un- una unb unk unn uno uns unu unv uny uoa uob uok uon uoo uos usa usb usk usn uso uss usu usv uua uun uus uuu uva uvb uvo uvs uvu uvv uyo uys uyu v-a vaa vab vak van vao vas vau vav vay vba vbk vbo vbs vbv vka vkb vn- vna vno vns vnu vnv voa vob vok von voo vos vou vov voy vsa vsb vsk vsn vso vss vsu vsv vuk vus vuv vva vvb vvo vvs vvv vyn yaa yab yak yan yao yas yau yav yay ybs yby yka ykk ykn yna ynk ynn yns ynu yny yob yok yon yoo yos you yoy ysa ysb ysk yso yss ysu ysy yua yuk yun yuo yus yuu yuv yuy yva yvo yvy yyb yys yyu yyy