-ana -vac a-ak aaaa aaab aaac aaan aaas aaav aaba aabb aabc aaca aacb aacc aack aacn aacs aacv aaka aana aasa aasc aass aava abaa abab abac abak aban abas abb- abba abbb abbs abca abcb abcc abcn abcs abs- absa abss abva acaa acab acac acan acas acba acca accc accs acks acsa acsc acss acvs acvv akaa akan akas akca akka akna aksa ana- anaa anab anac anak anan anas anba anbb anca ancc ank- anka anna annb anns ansa asaa asab asac asak asan asas asba asc- asca ascb ascc aska asks asnc assa assc assk assn asss asva asvs avab avan avas avcc avva baaa baak baan baas baba babb babs bac- baca bacc back bacn bacs bak- baka baks bana banc bank bann bans basa basc bask bass bava bbas bbbb bbbs bcaa bcas bcbc bcbs bcca bccc bccs bcsa bcsc bcsn bcss bnas bnss bsaa bsac bsas bscs bsns bssc bvsc caaa caab caac caan caas caba cabs cac- caca cacc cack caka cana canc cank cann cans casa casb casc cask cass cava cavs cbac cbbc cbbs cbca cbcc cbcn cbcs cbka cbkn cbna cbsa cbsc cbsn cbva cbvb cbvn ccaa ccab ccac ccas ccba ccbc ccbn ccca cccb cccc cccs cccv ccna ccnb ccnc ccns ccsa ccsn ccss ccvs ckac ckan ckbc ckck ckcs ckcv cknb cknc ckns cksa cksb cnaa cnac cnas cnbc cnna cnsa cnss csaa csab csac csak csas csav cscb cscc cscs cska csks cssa cvac cvas cvbs cvca cvcc cvss kaaa kaab kaak kaan kaas kaba kabb kabc kacb kacc kacs kacv kaka kakc kakk kakn kaks kana kanb kann kans kanv kas- kasa kasb kasc kask kasn kass kava kavb kavs kavv kbaa kbab kbac kbak kbas kbba kbbb kbbc kbbk kbbs kbca kbcb kbck kbcs kbkb kbkk kbkv kbna kbnn kbnv kbsa kbsb kbsk kbsn kbss kbsv kbva kbvb kbvc kcaa kcab kcac kcas kcav kcba kcbc kcbk kcbs kcca kccb kccc kcck kccv kckc kckk kckn kckv kcnb kcns kcnv kcsa kcsb kcsc kcsn kcss kcvk kcvs kcvv kkaa kkac kkan kkba kkbb kkbn kkbs kkcb kkck kkcn kkcs kkkk kknb kknn kkns kksa kksn kkss kkvv knaa knab knac knan knas knba knbb knbc knbn knca kncb knck kncn knkk knnb knnk knns knsa knsb knsc knsk knsn knss knva knvn ksab ksac ksak ksan ksas ksav ksba ksbc ksbn ksbs ksbv ksca kscb ksck kscn kscs kscv kska kskb kskk kskn ksks ksna ksnb ksnc ksnk ksnn ksns ksnv kssa kssn ksss ksva ksvc ksvn kvab kvak kvan kvas kvbc kvcb kvcc kvck kvcs kvcv kvna kvnc kvnn kvns kvsa kvsc kvss kvsv kvvn kvvs kvvv naaa naab naac naan naas naba nabc nabk nabs naca nacc nack nacs naka naks nan- nana nanb nann nans nas- nasa nasb nasc nask nass nasv nava navs navv nbaa nbak nbas nbbc nbca nbcc nbcs ncaa ncac ncba ncbc ncbs ncca nccc nccn nccs ncna ncnc ncsa ncsc ncss ncvs nnnn nnsa nnss nsaa nsac nsca nscc nscs nskk nsna nssa nssb nssc nsss nvcc nvcs nvss sa-c saab saac saak saan saas saba sabb sabc sabs saca sacc sack sacn sacs saka sakb sakk saks sana sank sann sans sasa sasc sask sass sava savs sbaa sbac sbas sbbs sbca sbcc sbcs sbsa scaa scab scac scak scan scas scba sccc sccs sck- scna scsa scsc scsn skab skac skan skn- skss snab snak snas snav snba snca sncc snns ssaa ssab ssac ssan ssas ssbn ssca sscc sscs ssns sssa sssb sssc ssss svan svcc svcs svns svsc vaan vaas vabs vaca vack vacs vaka vana vanc vank vann vans vas- vasa vass vava vavs vbcc vnav vsan vssc vvsb vvvv