-ana a-ak a-un aaaa aaab aaac aaan aaba aabb aabc aaca aacb aacc aack aacn aacu aaka aaku aana abaa abab abac abak aban abau abb- abba abbb abca abcb abcc abcn abnu abua abuk abun acaa acab acac acan acba acca accc accu acu- akaa akan akca akka akku akna akua ana- anaa anab anac anak anan anau anba anbb anbu anca ancc ank- anka anku anna annb anua anub anun auaa auca auna aunk baaa baak baan baba babb babu bac- baca bacc back bacn bak- baka baku bana banc bank bann banu bau- bauk bbau bbbb bcaa bcbc bcca bccc bcnu bcuc buba bubb bubu buca bucc buck bucu buka bukk buku buna bunb bunk bunn bunu caaa caab caac caan caba cabu cac- caca cacc cack caka cana canc cank cann cauc cauk cbac cbbc cbca cbcc cbcn cbcu cbka cbkn cbna ccaa ccab ccac ccba ccbc ccbn ccca cccb cccc cccu ccna ccnb ccnc ccnu ccuc ckac ckan ckbc ckck cknb cknc cnaa cnac cnbc cnna cuan cuau cub- cuba cubb cuca cucc cuck cucn cuk- cuka cuna kaaa kaab kaak kaan kaba kabb kabc kabu kacb kacc kacu kaka kakc kakk kakn kaku kana kanb kann kanu kau- kaub kauc kauk kaun kbaa kbab kbac kbak kbba kbbb kbbc kbbk kbbu kbca kbcb kbck kbcu kbkb kbkk kbna kbnn kbnu kbua kbub kbuc kbuk kbun kbuu kcaa kcab kcac kcau kcba kcbc kcbk kcbu kcca kccb kccc kcck kccu kckc kckk kckn kcnb kcua kcub kcuk kkaa kkac kkan kkba kkbb kkbn kkcb kkck kkcn kkkk kknb kknn kknu kkua kkuu knaa knab knac knan knau knba knbb knbc knbn knbu knca kncb knck kncn kncu knkk knnb knnk knub knuk kuac kuan kuau kuba kubb kubc kubu kuca kucb kucc kuka kukk kukn kuku kuna kunc kunk kunu kuub kuuk kuuu naaa naab naac naan naba nabc nabk nabu naca nacc nack naka nan- nana nanb nann nanu nbaa nbak nbbc nbca nbcc ncaa ncac ncba ncbc ncca nccc nccn nccu ncna ncnc ncua ncuk nkau nnnn nuan nuba nubc nubk nuca nuck nucu nuka nuku nuna nunc nunk nunn nuuk uabc uaca uaua ubac ubba ucak ucan ucbc ucca ucka ucua ukba ukcc uknc unaa unac unan unau unca uncc unka unkn unna uuuu