-ana a-ii aaaa aaab aaac aaai aaan aaas aaba aabb aabc aabi aaca aacb aacc aaci aacn aacs aaib aaic aaii aain aais aana aani aasa aasc aasi aass abaa abab abac abai aban abas abb- abba abbb abbi abbs abca abcb abcc abci abcn abcs abia abib abic abin abis abs- absa absi abss acaa acab acac acai acan acas acba acca accc acci accs aci- acia acic acin acis acsa acsc acsi acss aiai aian aias aiba aibn aica aicc aics aiia aiib aiic aiin aina ainc aini ains aisa aisb aisi ana- anaa anab anac anai anan anas anba anbb anbi anca ancc ania anib anic anin anis anna annb anni anns ansa ansi asaa asab asac asai asan asas asba asc- asca ascb ascc asci asia asic asii asin asis asnc asni assa assc assi assn asss ba-i baaa baan baas baba babb babi babs bac- baca bacc baci bacn bacs baia baib baic bain bais bana banc bani bann bans basa basc basi bass bbas bbbb bbbs bbci bbin bcaa bcas bcbc bcbs bcca bccc bcci bccs bcia bcis bcsa bcsc bcsn bcss bian bias biba bibb bibi bibs bica bicc bici bics biin biis bin- bina binc bini binn bins bis- bisa bisc biss bnai bnas bnib bnin bnss bsaa bsac bsas bsci bscs bsic bsin bsns bssc caaa caab caac caan caas caba cabi cabs cac- caca cacc caci caia caib caic cain cais cana canc cani cann cans casa casb casc casi cass cbac cbbc cbbs cbca cbcc cbcn cbcs cbia cbna cbsa cbsc cbsi cbsn ccaa ccab ccac ccai ccas ccba ccbc ccbn ccca cccb cccc ccci cccs ccic ccii ccis ccna ccnb ccnc ccni ccns ccsa ccsi ccsn ccss ciaa cian cias ciba cibc cibi cica cicc cici cics ciia ciii ciis cin- cina cinc cini cis- cisa cisc cisn ciss cnaa cnac cnas cnbc cnci cnib cnic cnna cnsa cnss csaa csab csac csas cscb cscc csci cscs csia csib csis cssa iaaa iaac iaai iaas iaba iaca iacc iacs iaia iain iais iana ians iasa iasc iasi ibac iban ibas ibca ibcs ibia ibis ibns ibsa ibsn ibss icaa icab icac icai ican icas icbc icbs icca iccb iccc icci iccn iccs icis icnb icnc icns icsa icsb icsc icsi icss iiac iias iica iiii iiis iisc iisi inab inac inai inan inas inba inca incb inci incs inia inis inna inni inns insa insc inss is-a isac isai isan isas isba isbn isca iscc isci iscn iscs isia isic isin isis isna issa issc issi isss n-ii naaa naab naac naai naan naas naba nabc nabi nabs naca nacc naci nacs naia naib naic nain nais nan- nana nanb nani nann nans nas- nasa nasb nasc nasi nass nbaa nbas nbbc nbca nbcc nbci nbcs nbia nbic ncaa ncac ncba ncbc ncbi ncbs ncca nccc ncci nccn nccs ncia ncis ncna ncnc ncsa ncsc ncsi ncss niab niac nian nias nibi nibs nica nicc nici nics niia nina nini nins nisa nisi niss nnnn nnsa nnss nsaa nsac nsai nsca nscc nscs nsic nsin nsis nsna nssa nssb nssc nsss s-ib s-ic s-ii sa-c saab saac saan saas saba sabb sabc sabi sabs saca sacc saci sacn sacs saia saic sain sais sana sani sann sans sasa sasc sasi sass sbaa sbac sbai sbas sbbs sbca sbcc sbcs sbia sbic sbsa sbsi scaa scab scac scai scan scas scba scbi sccc sccs sci- scia scic scin scis scna scsa scsc scsi scsn siaa siab siac siai sian sias siba sibc sibi sibs sica sicc sici sics sina sini sinn sins sisa sisc sisi siss snab snas snba snca sncc snia snib snns ssaa ssab ssac ssan ssas ssbn ssca sscc ssci sscs ssin ssis ssns sssa sssb sssc sssi ssss