a-ha aaaa aaab aaac aaah aaas aaba aabb aabc aabh aaca aacb aacc aach aacs aaha aahs aasa aasc aass abaa abab abac abaj abas abb- abba abbb abbs abca abcb abcc abch abcs abha abhs abjs abs- absa abss acaa acab acac acas acba acca accc acch accs acha achh achs acsa acsc acss ahab ahac ahah ahas ahha ahhs ahja ahsa ahss ajab ajac ajah ajas ajba ajhs ajss asaa asab asac asah asas asba asc- asca ascb ascc asch ascj asha ashs asja assa assc assh asss baaa baah baas baba babb babs bac- baca bacc bach bacs baha bahs baja bajs basa basc bash bass bbas bbbb bbbs bbch bbhs bcaa bcas bcbc bcbs bcca bccc bccs bchs bcsa bcsc bcss bhca bhcc bhhs bjcc bjhs bsaa bsac bsas bscs bshs bssc caaa caab caac caah caas caba cabs cac- caca cacc cach caha cahs caja casa casb casc cash cass cbac cbbc cbbs cbca cbcc cbcs cbha cbhs cbsa cbsc ccaa ccab ccac ccas ccba ccbc ccca cccb cccc cccs ccha cchs ccsa ccss chaa chab chac chah chaj chas chca chch chcs chha chhs chsc chsh chsj cjbc cjca cjcb cjch cjcj cjcs cjhs cjsb cjss csaa csab csac csas cscb cscc csch cscs cshs cssa haab haas haba habs hacs haha hahs haja hajj hasa hasc hash hass hbbs hbhs hbss hcbc hcbs hcca hccb hccc hcch hccs hchs hcjb hcsa hcsc hcss hhaa hhhh hhhs hsac hsas hsbc hscc hshs jaas jaba jabs jaca jacc jacs jaha jaja jasa jasc jash jass jbaa jbhs jcbc jccc jchs jcss jhhs jjcc jsss sa-c saab saac saah saaj saas saba sabb sabc sabs saca sacc sacs saha sahs saja sasa sasc sash sass sbaa sbac sbas sbbs sbca sbcc sbcs sbhc sbhs sbsa scaa scab scac scas scba sccc sccs sch- scha schh schs scsa scsc scsh shab shac shah shaj shas shbs shca shcc shha shhh shhs shsc sjab sjac sjcc sjcs sjhs ssaa ssab ssac ssas ssca sscc sscs sshs sssa sssb sssc sssh ssss