a-a a-b a-c aaa aab aac aah aar aas aau ab- aba abb abc abh abr abs abu ac- aca acb acc ach acr acs acu aha ahb ahc ahh ahr ahs ahu ar- ara arb arc arh arr ars aru as- asa asb asc ash asr ass asu au- aua aub auc auh aur aus b-u baa bab bac bah bar bas bau bba bbb bbc bbh bbr bbs bbu bca bcb bcc bch bcr bcs bcu bha bhb bhc bhh bhr bhs bhu bra brb brh brr brs bru bsa bsb bsc bsh bsr bss bsu bua bub buc buh bur bus buu c-- caa cab cac cah car cas cau cba cbb cbc cbh cbr cbs cbu cca ccb ccc cch ccr ccs ccu ch- cha chb chc chh chr chs chu cra crb crc crh crr crs cru csa csb csc csh csr css csu cua cub cuc cuh cur cus cuu haa hab hac hah har has hau hba hbb hbc hbh hbr hbs hbu hca hcb hcc hch hcr hcs hha hhb hhc hhh hhr hhs hhu hr- hra hrb hrc hrh hrr hrs hru hsa hsb hsc hsh hsr hss hsu hua hub huc huh hur hus huu ra- raa rab rac rah rar ras rau rba rbb rbc rbh rbr rbs rbu rca rcb rcc rch rcr rcs rcu rh- rha rhb rhc rhh rhr rhs rhu rra rrb rrc rrh rrr rrs rru rsa rsb rsc rsh rsr rss rsu rua rub ruc ruh rur rus ruu saa sab sac sah sar sas sau sba sbb sbc sbh sbr sbs sbu sca scb scc sch scr scs scu sh- sha shb shc shh shr shs shu sr- sra srb src srh srr srs ss- ssa ssb ssc ssh ssr sss ssu sua sub suc suh sur sus suu ua- uaa uab uac uah uar uas uau uba ubb ubc ubh ubr ubs ubu uca ucb ucc uch ucr ucs ucu uha uhb uhc uhh uhr uhs uhu ur- ura urb urc urr urs uru usa usb usc ush usr uss usu uua uuc uur uus uuu

a-ha aaaa aaab aaac aaah aaar aaas aaba aabb aabc aabh aaca aacb aacc aach aacr aacs aacu aaha aahs aara aarc aars aaru aasa aasc aass aasu aaus abaa abab abac abar abas abau abb- abba abbb abbr abbs abca abcb abcc abch abcr abcs abha abhr abhs abra abrc abrs abs- absa abss absu abua abus acaa acab acac acar acas acba acca accc acch accs accu acha achh achr achs achu acr- acra acrc acrr acrs acsa acsc acss acu- acur acus ahab ahac ahah ahar ahas ahau ahha ahhs ahra ahrc ahrr ahrs ahsa ahss ahua ahus arab arac arah arar aras arau arba arbh arbs arc- arca arch arcs arh- arhs arr- arra arrc arrh arrr arrs arru ars- arsa arsc arsu arua arub asaa asab asac asah asar asas asau asba asbu asc- asca ascb ascc asch ascr asha ashs ashu asra asrc asrs asru assa assc assh assr asss assu asub asur asus auaa auca auch aur- aura ausa aush ausu baaa baah baar baas baba babb babr babs babu bac- baca bacc bach bacs baha bahr bahs bahu bar- bara barb barc barh barr bars baru basa basc bash bass basu bau- baur bbas bbau bbbb bbbs bbch bbhs bbrc bcaa bcar bcas bcbc bcbs bcca bccc bccs bchs bcra bcrs bcru bcsa bcsc bcss bcuc bhar bhca bhcc bhhs bhra bhur bhuu brab brac brah bras brau brca brcb brhs brrr brrs brsb brsr bruc bruh brus bsaa bsac bsas bscs bshs bsra bssc buar buba bubb bubs bubu buca bucc buch bucs bucu buha buhr buhs bur- bura burb burh burr burs buru busa busc bush buss busu buus caaa caab caac caah caas caba cabs cabu cac- caca cacc cach cacr caha cahs cara carb carc carr cars casa casb casc cash casr cass casu cauc caus cbac cbar cbbc cbbs cbca cbcc cbcr cbcs cbcu cbha cbhs cbrh cbsa cbsc cbus ccaa ccab ccac ccar ccas ccba ccbc ccca cccb cccc cccs cccu ccha cchr cchs ccra ccrc ccrs ccsa ccss ccuc ccus chaa chab chac chah char chas chau chca chch chcs chha chhs chra chrb chrc chrr chrs chsc chsh chsr chua chub chur chus crab crac crar cras crau crbc crbu crca crcc crcr crhs crsa crss crub crus csaa csab csac csar csas cscb cscc csch cscr cscs cshs csra csrc csrs cssa cssr csua csur csus cuau cub- cuba cubb cubs cuca cucc cura curb curr curs cusa cusb cush cuss cusu haab haar haas haba habs habu hacs haha hahs hara harc harh harr hars haru hasa hasc hash hass hau- haus hbar hbbs hbhs hbrs hbss hcbc hcbs hcca hccb hccc hcch hccs hchs hcsa hcsc hcss hhaa hhhh hhhs hhus hrac hras hrhs hrrc hsac hsas hsbc hscc hshs hsua hsur huac huah huas huba hubb hubs huch hucs hucu huhs huhu hura hurr hurs huru husa hush huss huub huus raab raas raba rabb rabs rabu rac- raca racc rach racs racu raha rahr rahs rahu rara rarb rars rasa rasc rash rass rasu raua raub rauc raus rbbb rbbr rbbs rbhs rbss rcac rcas rcbc rccb rccc rccs rchb rchs rcsa rcsc rcss rhau rhhs rhus rrah rras rrhs rrrr rsaa rscc rsch rscs rshs rssa rsua ruah ruas ruba rubb rubs rubu ruca ruch ruhh ruhr ruhs rura rurc rurs ruru rusa rush russ rusu sa-c saab saac saah saar saas saba sabb sabc sabr sabs sabu saca sacc sacr sacs sacu saha sahr sahs sahu sara sarc sarh sarr sars saru sasa sasc sash sass saua sauc sauh saur saus sbaa sbac sbar sbas sbbs sbca sbcc sbcs sbhc sbhs sbsa sbus scaa scab scac scar scas scba sccc sccs sch- scha schh schr schs scr- scra scrc scrs scsa scsc scsh scsr scsu scua scub scur shab shac shah shar