a-ha aaaa aaab aaac aaah aaas aaba aabb aabc aabh aaca aacb aacc aach aacs aacu aaha aahs aasa aasc aass aasu aaus abaa abab abac abas abau abb- abba abbb abbs abca abcb abcc abch abcs abha abhs abs- absa abss absu abua abus acaa acab acac acas acba acca accc acch accs accu acha achh achs achu acsa acsc acss acu- acus ahab ahac ahah ahas ahau ahha ahhs ahsa ahss ahua ahus asaa asab asac asah asas asau asba asbu asc- asca ascb ascc asch asha ashs ashu assa assc assh asss assu asub asus auaa auca auch ausa aush ausu baaa baah baas baba babb babs babu bac- baca bacc bach bacs baha bahs bahu basa basc bash bass basu bau- bbas bbau bbbb bbbs bbch bbhs bcaa bcas bcbc bcbs bcca bccc bccs bchs bcsa bcsc bcss bcuc bhca bhcc bhhs bhuu bsaa bsac bsas bscs bshs bssc buba bubb bubs bubu buca bucc buch bucs bucu buha buhs busa busc bush buss busu buus caaa caab caac caah caas caba cabs cabu cac- caca cacc cach caha cahs casa casb casc cash cass casu cauc caus cbac cbbc cbbs cbca cbcc cbcs cbcu cbha cbhs cbsa cbsc cbus ccaa ccab ccac ccas ccba ccbc ccca cccb cccc cccs cccu ccha cchs ccsa ccss ccuc ccus chaa chab chac chah chas chau chca chch chcs chha chhs chsc chsh chua chub chus csaa csab csac csas cscb cscc csch cscs cshs cssa csua csus cuau cub- cuba cubb cubs cuca cucc cusa cusb cush cuss cusu haab haas haba habs habu hacs haha hahs hasa hasc hash hass hau- haus hbbs hbhs hbss hcbc hcbs hcca hccb hccc hcch hccs hchs hcsa hcsc hcss hhaa hhhh hhhs hhus hsac hsas hsbc hscc hshs hsua huac huah huas huba hubb hubs huch hucs hucu huhs huhu husa hush huss huub huus sa-c saab saac saah saas saba sabb sabc sabs sabu saca sacc sacs sacu saha sahs sahu sasa sasc sash sass saua sauc sauh saus sbaa sbac sbas sbbs sbca sbcc sbcs sbhc sbhs sbsa sbus scaa scab scac scas scba sccc sccs sch- scha schh schs scsa scsc scsh scsu scua scub shab shac shah shas shau shbs shca shcc shha shhh shhs shsc shua shub shus shuu ssaa ssab ssac ssas ssau ssca sscc sscs sshs sssa sssb sssc sssh ssss suas sub- suba subb subh subs suc- succ such sucs suha suhb sus- susa suss susu suus uabc uaca uahs uasa uaua ubac ubba ucas ucbc ucca ucha uchs ucsa ucsb ucsc ucsu ucua uhss uhuh us-a usaa usac usas usba usbc usbs usca uscc usch uscs usha ushs ushu ussa ussb ussc usss ussu usua usus uuuu