a-a a-b a-c aaa aab aac aah aam aar aas ab- aba abb abc abh abm abr abs ac- aca acb acc ach acm acr acs aha ahb ahc ahh ahm ahr ahs ama amb amc amh amm amr ams ar- ara arb arc arh arm arr ars as- asa asb asc ash asm asr ass baa bab bac bah bam bar bas bba bbb bbc bbh bbm bbr bbs bca bcb bcc bch bcm bcr bcs bha bhb bhc bhh bhm bhr bhs bma bmb bmc bmh bmm bmr bms bra brb brh brm brr brs bsa bsb bsc bsh bsm bsr bss c-- caa cab cac cah cam car cas cba cbb cbc cbh cbm cbr cbs cca ccb ccc cch ccm ccr ccs ch- cha chb chc chh chm chr chs cma cmb cmc cmh cmm cmr cms cra crb crc crh crm crr crs csa csb csc csh csm csr css haa hab hac hah ham har has hba hbb hbc hbh hbm hbr hbs hca hcb hcc hch hcm hcr hcs hha hhb hhc hhh hhm hhr hhs hma hmb hmc hmh hmm hmr hms hr- hra hrb hrc hrh hrm hrr hrs hsa hsb hsc hsh hsm hsr hss m-r maa mab mac mah mam mar mas mba mbb mbc mbh mbm mbr mbs mc- mca mcb mcc mch mcm mcr mcs mha mhc mhh mhm mhr mhs mma mmb mmc mmh mmm mmr mms mra mrb mrc mrh mrm mrr mrs msa msb msc msh msm msr mss ra- raa rab rac rah ram rar ras rba rbb rbc rbh rbm rbr rbs rca rcb rcc rch rcm rcr rcs rh- rha rhb rhc rhh rhm rhr rhs rma rmb rmc rmh rmm rmr rms rra rrb rrc rrh rrm rrr rrs rsa rsb rsc rsh rsm rsr rss saa sab sac sah sam sar sas sba sbb sbc sbh sbm sbr sbs sca scb scc sch scm scr scs sh- sha shb shc shh shm shr shs sma smb smc smh smm smr sms sr- sra srb src srh srm srr srs ss- ssa ssb ssc ssh ssm ssr sss

a-ha aaaa aaab aaac aaah aaam aaar aaas aaba aabb aabc aabh aabm aaca aacb aacc aach aacm aacr aacs aaha aahs aama aamb aamc aamr aams aara aarc aarm aars aasa aasc aasm aass abaa abab abac abam abar abas abb- abba abbb abbr abbs abca abcb abcc abch abcr abcs abha abhm abhr abhs abma abmb abmc abms abra abrc abrs abs- absa abss acaa acab acac acar acas acba acca accc acch accm accs acha achh achr achs acma acmc acmh acms acr- acra acrc acrm acrr acrs acsa acsc acsm acss ahab ahac ahah aham ahar ahas ahha ahhs ahmc ahms ahra ahrc ahrr ahrs ahsa ahss amaa amac amah amam amar amas amb- amba ambr ambs amca amcc amcs amhs amm- amma amra amrc amsa amsc amss arab arac arah aram arar aras arba arbh arbs arc- arca arch arcm arcs arh- arhs arma armc armh armm arms arr- arra arrc arrh arrr arrs ars- arsa arsc asaa asab asac asah asam asar asas asba asbm asc- asca ascb ascc asch ascr asha ashs asma asmm asmr asms asra asrc asrm asrs assa assc assh assr asss baaa baah baam baar baas baba babb babm babr babs bac- baca bacc bach bacs baha bahr bahs bama bamb bamc bamm bams bar- bara barb barc barh barm barr bars basa basc bash bass bbas bbbb bbbs bbch bbcm bbhs bbrc bcaa bcam bcar bcas bcbc bcbs bcca bccc bccm bccs bchs bcma bcms bcra bcrs bcsa bcsc bcsm bcss bhar bhca bhcc bhhs bhms bhra bmaa bmhs brab brac brah bram bras brca brcb brhs brmc brrm brrr brrs brsb brsr bsaa bsac bsam bsas bscs bshs bsms bsra bsrm bssc bssm caaa caab caac caah caam caas caba cabs cac- caca cacc cach cacm cacr caha cahs cama camb camc camh camm cams cara carb carc carm carr cars casa casb casc cash casm casr cass cbac cbar cbbc cbbs cbca cbcc cbcm cbcr cbcs cbha cbhs cbms cbrh cbrm cbsa cbsc cbsm ccaa ccab ccac ccam ccar ccas ccba ccbc ccca cccb cccc cccm cccs ccha cchr cchs ccma ccmb ccmc ccmm ccms ccra ccrc ccrs ccsa ccss chaa chab chac chah cham char chas chca chch chcm chcs chha chhs chmb chmc chms chra chrb chrc chrr chrs chsc chsh chsm chsr cmaa cmac cmah cmas cmba cmbc cmbs cmcc cmcs cmha cmhc cmhs cmmb cmmc cmms cmra cmrr cmrs cmsa cmsc crab crac cram crar cras crbc crca crcc crcr crhs crmb crms crsa crss csaa csab csac csar csas csbm cscb cscc csch cscr cscs cshs csma csmc csra csrc csrs cssa cssm cssr haab haam haar haas haba habs hacs haha hahs hama hamc hamm hamr hams hara harc harh harm harr hars hasa hasc hash hass hbar hbbs hbhs hbms hbrs hbss hcbc hcbs hcca hccb hccc hcch hccs hchs hcmc hcmm hcms hcsa hcsc hcss hhaa hhhh hhhs hhms hmas hmbs hmcs hmhb hmhs hmmm hmms hmsa hmsm hrac hras hrhs hrrc hsac hsam hsas hsbc hscc hshs hsmm maaa maac maam maar maas maba mabs mac- maca macb macc mach macr macs maha mahr mahs mama mamc mams mar- mara marc marm marr mars masa masc mash masr mass mbac mbam mbas mbba mbbs mbca mbcs mbhs mbms mbrs mcaa mcac mcas mcba mcbc mcca mccc mchs mcmc mcrc mcsa mcss mhac mhhs mhmm mhmr mhra mhsa mhsc mmaa mmab mmac mmar mmas mmcc mmcm mmcs mmhm mmhs mmmc mmmh mmmm mmms mmrc mmsc mr-c mrac mras mrbb mrbm mrbs mrca mrcb mrcc mrcs mrhs mrmc mrrc mrsa mrsc msaa msar msas msba msca mscc msha mshb mshs msma msmb msmc msmm msms msra msrb mssa mssm mssr raab raam raas raba rabb rabs rac- raca racc rach racs raha rahm rahr rahs rama ramb ramm rams rara rarb