a-a a-b a-c aaa aab aac aah aak aar aas ab- aba abb abc abh abk abr abs ac- aca acb acc ach ack acr acs aha ahb ahc ahh ahk ahr ahs aka akb akc akh akk akr aks ar- ara arb arc arh ark arr ars as- asa asb asc ash ask asr ass baa bab bac bah bak bar bas bba bbb bbc bbh bbk bbr bbs bca bcb bcc bch bck bcr bcs bha bhb bhc bhh bhk bhr bhs bka bkb bkc bkk bkr bks bra brb brh brk brr brs bsa bsb bsc bsh bsk bsr bss c-- caa cab cac cah cak car cas cba cbb cbc cbh cbk cbr cbs cca ccb ccc cch cck ccr ccs ch- cha chb chc chh chk chr chs cka ckb ckc ckh cks cra crb crc crh crk crr crs csa csb csc csh csk csr css haa hab hac hah hak har has hba hbb hbc hbh hbk hbr hbs hca hcb hcc hch hck hcr hcs hha hhb hhc hhh hhk hhr hhs hka hkb hkh hkk hkr hks hr- hra hrb hrc hrh hrk hrr hrs hsa hsb hsc hsh hsk hsr hss ka- kaa kab kac kah kak kar kas kba kbb kbc kbh kbk kbr kbs kca kcb kcc kch kck kcr kcs kha khh khk khr khs kkb kkc kkh kkk kkr kks kra krc krk krr krs ksa ksb ksc ksh ksk ksr kss ra- raa rab rac rah rak rar ras rba rbb rbc rbh rbk rbr rbs rca rcb rcc rch rcr rcs rh- rha rhb rhc rhh rhr rhs rkb rkc rkk rks rra rrb rrc rrh rrk rrr rrs rsa rsb rsc rsh rsk rsr rss saa sab sac sah sak sar sas sba sbb sbc sbh sbk sbr sbs sca scb scc sch sck scr scs sh- sha shb shc shh shk shr shs sk- ska skb skc skh skk skr sks sr- sra srb src srh srk srr srs ss- ssa ssb ssc ssh ssk ssr sss

a-ak a-ha aaaa aaab aaac aaah aaar aaas aaba aabb aabc aabh aaca aacb aacc aach aack aacr aacs aaha aahk aahs aaka aara aarc aars aasa aasc aass abaa abab abac abak abar abas abb- abba abbb abbr abbs abca abcb abcc abch abcr abcs abha abhr abhs abra abrc abrs abs- absa abss acaa acab acac acar acas acba acca accc acch accs acha achh achr achs acks acr- acra acrc acrr acrs acsa acsc acss ahab ahac ahah ahar ahas ahha ahhs ahra ahrc ahrr ahrs ahsa ahss akaa akah akar akas akca akha akhs akka akr- akra aksa arab arac arah arak arar aras arba arbh arbs arc- arca arch arcs arh- arhs arka arkh arks arr- arra arrc arrh arrk arrr arrs ars- arsa arsc arsk asaa asab asac asah asak asar asas asba asc- asca ascb ascc asch ascr asha ashk ashs aska askr asks asra asrc asrs assa assc assh assk assr asss baaa baah baak baar baas baba babb babr babs bac- baca bacc bach back bacs baha bahr bahs bak- baka bakh bakr baks bar- bara barb barc barh bark barr bars basa basc bash bask bass bbas bbbb bbbs bbch bbhs bbrc bcaa bcar bcas bcbc bcbs bcca bccc bccs bchs bcra bcrs bcsa bcsc bcss bhar bhca bhcc bhhs bhra bkhs brab brac brah brak bras brca brcb brhs brka brkb brrr brrs brsb brsr bsaa bsac bsas bscs bshs bsra bssc caaa caab caac caah caas caba cabs cac- caca cacc cach cack cacr caha cahs caka cara carb carc cark carr cars casa casb casc cash cask casr cass cbac cbar cbbc cbbs cbca cbcc cbcr cbcs cbha cbhs cbka cbkr cbrh cbsa cbsc ccaa ccab ccac ccar ccas ccba ccbc ccca cccb cccc cccs ccha cchr cchs ccra ccrc ccrs ccsa ccss chaa chab chac chah chak char chas chca chch chcs chha chhs chka chkb chks chra chrb chrc chrr chrs chsc chsh chsr ckac ckbc ckch ckck ckcs ckhs ckrc cksa cksb cksh crab crac crar cras crbc crca crcc crcr crhs crkc crsa crss csaa csab csac csak csar csas cscb cscc csch cscr cscs cshs cska csks csra csrc csrs cssa cssr haab haak haar haas haba habs hack hacs haha hahs haka hakk haks hara harc harh hark harr hars hasa hasc hash hask hass hbar hbbs hbhs hbrs hbss hcbc hcbs hcca hccb hccc hcch hccs hchs hcsa hcsc hcss hhaa hhhh hhhs hkcc hkcs hrac hras hrhs hrrc hsac hsas hsbc hscc hshs kaaa kaab kaak kaar kaas kaba kabb kabc kabr kacb kacc kach kacs kaha kahc kahr kahs kaka kakc kakh kakk kaks kara karb kark karr kars kas- kasa kasb kasc kash kask kasr kass kbaa kbab kbac kbak kbar kbas kbba kbbb kbbc kbbk kbbr kbbs kbca kbcb kbch kbck kbcr kbcs kbhb kbhc kbhh kbhr kbhs kbkb kbkk kbkr kbra kbrb kbrc kbrh kbrk kbsa kbsb kbsk kbsr kbss kcaa kcab kcac kcah kcar kcas kcba kcbc kcbk kcbr kcbs kcca kccb kccc kcck kccr kcha kchh kchk kchr kchs kckc kckk kckr kcrc kcrh kcrr kcrs kcsa kcsb kcsc kcsr kcss khab khac khak khar khas khbc khbr khbs khca khcb khcc khch khck khcs khhk khhs khka khkk khkr khks khra khrk khrr khss kkaa kkac kkar kkba kkbb kkbr kkbs kkcb kkch kkck kkcr kkcs kkha kkhb kkhh kkhk kkhr kkkk kkrb kkrc kkrh kkrk kkrr kkrs kksa kksr kkss krab krac krah krak krar kras krba krbb krbk krbr krca krcb krcc krch krcs krhc krhs krka krkc krkh krkk krkr krks krrb krrc krrk krrr krrs krsa krsc krsh krsk krsr krss ksab ksac ksah ksak ksar ksas ksba ksbc ksbh ksbr ksbs ksca kscb ksch ksck kscr kscs ksha kshb kshk kshr kshs kska kskb kskk kskr ksks ksra ksrb ksrh ksrr ksrs kssa kssr ksss raab raak raas raba rabb rabk rabs