-ase a-be aaaa aaab aaac aaae aaas aaba aabb aabc aaca aacb aacc aace aacs aaea aaec aaes aasa aasc aase aass abaa abab abac abae abas abb- abba abbb abbe abbs abca abcb abcc abcs abec abee abes abs- absa abse abss acaa acab acac acae acas acba acca accc acce accs ace- acea acec aces acsa acsc acse acss aeac aeas aebs aecb aesc aess asaa asab asac asae asas asba asc- asca ascb ascc asce asea asec asee ases assa assc asse asss baaa baas baba babb babe babs bac- baca bacc bace bacs baes basa basc base bass bbas bbbb bbbs bbeb bcaa bcas bcbc bcbs bcca bccc bccs bcec bces bcsa bcsc bcss beas beba bebb bebe beca becs beeb bees bes- besa bese bess bsaa bsac bsas bscs bsea bseb bsec bsee bses bssc bsse caaa caab caac caas caba cabe cabs cac- caca cacc cace caec caes casa casb casc case cass cbac cbbc cbbs cbca cbcc cbce cbcs cbea cbec cbee cbsa cbsc cbse ccaa ccab ccac ccas ccba ccbc ccca cccb cccc cccs ccee ccsa ccss ceac ceas ceba cebs cec- ceca cece cecs ceeb ceec cees cesa cesc cese cess csaa csab csac csas cscb cscc csce cscs csea csec csee cssa csse eaba eaca eacc eaec easa ease ebac ebba ebbc ebbs ebcc ebes ebsa ecaa ecac ecbc ecbe ecca eccb eccc ecce eces ecsa ecsc ecse ecss eeca eecs eeea eeee eees eese esab esac esas esba esbs esca escb esce escs esea esee eses essa esse sa-c saab saac saae saas saba sabb sabc sabe sabs saca sacc sace sacs saeb saes sasa sasc sase sass sbaa sbac sbas sbbs sbca sbcc sbcs sbsa sbse scaa scab scac scas scba sccc scce sccs scea scec scee scsa scsc se-c se-e se-s seaa seab seac seas seba sebe sebs sec- seca secc sece secs seea seeb seec sees sesa sesc sese sess ssaa ssab ssac ssas ssca sscc ssce sscs ssec ssee sses sssa sssb sssc ssss