a-ha aaaa aaab aaac aaad aaah aaas aaba aabb aabc aabd aabh aaca aacb aacc aacd aach aacs aada aadc aads aaha aahs aasa aasc aasd aass abaa abab abac abad abas abb- abba abbb abbs abca abcb abcc abcd abch abcs abda abha abhs abs- absa absd abss acaa acab acac acad acas acba acca accc accd acch accs acda acdb acdc acds acha achh achs acsa acsc acsd acss adaa adab adac adad adah adas adba adbc adcc adcs adda addc addd adds adha adhd adhs adsa adss ahab ahac ahad ahah ahas ahha ahhs ahsa ahss asaa asab asac asad asah asas asba asc- asca ascb ascc asch asda asds asha ashs assa assc assd assh asss baaa baad baah baas baba babb babs bac- baca bacc bach bacs bada badb badd badh bads baha bahs basa basc bash bass bbad bbas bbbb bbbs bbch bbdd bbhs bcaa bcas bcbc bcbs bcca bccc bccs bcda bcds bchd bchs bcsa bcsc bcss bdbc bddc bddh bdhs bdsd bhca bhcc bhhs bsaa bsac bsas bsbd bscs bshs bssc bssd c-cd caaa caab caac caah caas caba cabs cac- caca cacc cach cada cadc cadd cads caha cahs casa casb casc casd cash cass cbac cbbc cbbs cbca cbcc cbcs cbdb cbdc cbds cbha cbhs cbsa cbsc ccaa ccab ccac ccad ccas ccba ccbc ccca cccb cccc cccs ccdc ccdh ccds ccha cchs ccsa ccsd ccss cdaa cdac cdad cdba cdcs cdda cddb cdhs cdss chaa chab chac chad chah chas chca chch chcs chha chhs chsc chsh csaa csab csac csas cscb cscc cscd csch cscs csda csdb cshs cssa cssd daab daad daas daba dabb dabs daca dacs dada dads daha dahs dasa dasb dasc dasd dash dass dbas dbcc dbcs dbhs dbsa dbss dcas dcbc dcca dccb dccc dccs dcdb dcds dchs dcsc dcss dddd ddss dhaa dhad dhsa dsac dsba dsbc dscc dsch dscs dsda dshs dssa dssc haab haad haas haba habs hacs hada hadh haha hahs hasa hasc hasd hash hass hbbs hbcd hbds hbhs hbss hcbc hcbs hcca hccb hccc hcch hccs hchs hcsa hcsc hcss hdca hdda hdhs hdss hhaa hhds hhhh hhhs hsac hsad hsas hsbc hscc hshs sa-c saab saac saad saah saas saba sabb sabc sabs saca sacc sacd sacs sada sadb sadc sadd sadh sads saha sahs sasa sasc sasd sash sass sbaa sbac sbas sbbs sbca sbcc sbcs sbds sbhc sbhs sbsa sbsd scaa scab scac scad scas scba sccc sccs scda scdc scds sch- scha schh schs scsa scsc scsd scsh sdba sdcc sdch sddc sdds sdha sdhb sdhd sdhs sdsc sdss shab shac shad shah shas shbs shca shcc shha shhh shhs shsc ssaa ssab ssac ssas ssca sscc sscs ssdc ssdd sshs sssa sssb sssc sssh ssss