a-a a-b a-c aaa aab aac aak aan aas aau ab- aba abb abc abk abn abs abu ac- aca acb acc ack acn acs acu aka akb akc akk akn aks aku an- ana anb anc ank ann ans anu as- asa asb asc ask asn ass asu au- aua aub auc auk aun aus b-u baa bab bac bak ban bas bau bba bbb bbc bbk bbn bbs bbu bca bcb bcc bck bcn bcs bcu bka bkb bkc bkk bkn bks bna bnb bnc bnk bnn bns bnu bsa bsb bsc bsk bsn bss bsu bua bub buc buk bun bus buu c-- caa cab cac cak can cas cau cba cbb cbc cbk cbn cbs cbu cca ccb ccc cck ccn ccs ccu cka ckb ckc cks cn- cna cnb cnc cnn cns cnu csa csb csc csk csn css csu cua cub cuc cuk cun cus cuu ka- kaa kab kac kak kan kas kau kba kbb kbc kbk kbn kbs kbu kca kcb kcc kck kcn kcs kcu kkb kkc kkk kkn kks kku kn- kna knc knk knn knu ksa ksb ksc ksk ksn kss ksu kub kuc kuk kun kus kuu naa nab nac nak nan nas nau nba nbb nbc nbk nbn nbs nbu nca ncb ncc nck ncn ncs ncu nka nkc nkk nkn nks nku nna nnb nnc nnk nnn nns nnu nsa nsb nsc nsk nsn nss nsu nua nub nuc nuk nun nus nuu saa sab sac sak san sas sau sba sbb sbc sbk sbn sbs sbu sca scb scc sck scn scs scu sk- ska skb skc skk sks sku sna snb snc snk snn sns snu ss- ssa ssb ssc ssk ssn sss ssu sua sub suc suk sun sus suu ua- uaa uab uac uak uan uas uau uba ubb ubc ubk ubn ubs ubu uca ucb ucc uck ucn ucs ucu uka ukb ukc ukk ukn uku un- una unb unc unk unn uns unu usa usb usc usk usn uss usu uua uuc uun uus uuu

-ana a-ak a-un aaaa aaab aaac aaan aaas aaba aabb aabc aaca aacb aacc aack aacn aacs aacu aaka aaku aana aasa aasc aass aasu aaus abaa abab abac abak aban abas abau abb- abba abbb abbs abca abcb abcc abcn abcs abnu abs- absa abss absu abua abuk abun abus acaa acab acac acan acas acba acca accc accs accu acks acsa acsc acss acu- acus akaa akan akas akca akka akku akna aksa aksu akua ana- anaa anab anac anak anan anas anau anba anbb anbu anca ancc ank- anka anku anna annb anns ansa ansu anua anub anun anus asaa asab asac asak asan asas asau asba asbu asc- asca ascb ascc aska asks asnc assa assc assk assn asss assu asub asun asus auaa auca auks auna aunk ausa ausu baaa baak baan baas baba babb babs babu bac- baca bacc back bacn bacs bak- baka baks baku bana banc bank bann bans banu basa basc bask bass basu bau- bauk bbas bbau bbbb bbbs bcaa bcas bcbc bcbs bcca bccc bccs bcnu bcsa bcsc bcsn bcss bcuc bnas bnss bsaa bsac bsas bscs bsns bssc buba bubb bubs bubu buca bucc buck bucs bucu buka bukk buku buna bunb bunk bunn buns bunu busa busc busk buss busu buus caaa caab caac caan caas caba cabs cabu cac- caca cacc cack caka cana canc cank cann cans casa casb casc cask cass casu cauc cauk caus cbac cbbc cbbs cbca cbcc cbcn cbcs cbcu cbka cbkn cbna cbsa cbsc cbsn cbus ccaa ccab ccac ccas ccba ccbc ccbn ccca cccb cccc cccs cccu ccna ccnb ccnc ccns ccnu ccsa ccsn ccss ccuc ccus ckac ckan ckbc ckck ckcs cknb cknc ckns cksa cksb cnaa cnac cnas cnbc cnna cnsa cnss csaa csab csac csak csas cscb cscc cscs cska csks cssa csua csus cuan cuau cub- cuba cubb cubs cuca cucc cuck cucn cuk- cuka cuna cusa cusb cusk cuss cusu kaaa kaab kaak kaan kaas kaba kabb kabc kabu kacb kacc kacs kacu kaka kakc kakk kakn kaks kaku kana kanb kann kans kanu kas- kasa kasb kasc kask kasn kass kasu kau- kaub kauc kauk kaun kaus kbaa kbab kbac kbak kbas kbba kbbb kbbc kbbk kbbs kbbu kbca kbcb kbck kbcs kbcu kbkb kbkk kbna kbnn kbnu kbsa kbsb kbsk kbsn kbss kbsu kbua kbub kbuc kbuk kbun kbus kbuu kcaa kcab kcac kcas kcau kcba kcbc kcbk kcbs kcbu kcca kccb kccc kcck kccu kckc kckk kckn kcnb kcns kcsa kcsb kcsc kcsn kcss kcsu kcua kcub kcuk kkaa kkac kkan kkba kkbb kkbn kkbs kkcb kkck kkcn kkcs kkkk kknb kknn kkns kknu kksa kksn kkss kksu kkua kkus kkuu knaa knab knac knan knas knau knba knbb knbc knbn knbu knca kncb knck kncn kncu knkk knnb knnk knns knsa knsb knsc knsk knsn knss knsu knub knuk knus ksab ksac ksak ksan ksas ksau ksba ksbc ksbn ksbs ksca kscb ksck kscn kscs kscu kska kskb kskk kskn ksks ksku ksna ksnb ksnc ksnk ksnn ksns kssa kssn ksss kssu ksua ksub ksun ksuu kuac kuan kuau kuba kubb kubc kubs kubu kuca kucb kucc kuka kukk kukn kuks kuku kuna kunc kunk kuns kunu kusa kusb kusc kusn kusu kuub kuuk kuuu naaa naab naac naan naas naba nabc nabk nabs nabu naca nacc nack nacs naka naks nan- nana nanb nann nans nanu nas- nasa nasb nasc nask nass nasu naus nbaa nbak nbas nbbc nbca nbcc nbcs ncaa ncac ncba ncbc ncbs ncca nccc nccn nccs nccu ncna ncnc ncsa ncsc ncss ncua ncuk nkau nnnn nnsa nnss nsaa nsac nsca nscc nscs nskk nsna nssa nssb nssc nsss nsub nuan nuba nubc nubk nubs nuca nuck nucs nucu nuka nuku nuna nunc nunk nunn nuns nuss nusu nuuk sa-c saab saac saak saan saas saba sabb sabc sabs sabu saca sacc sack sacn sacs sacu saka sakb sakk saks