a-a a-b a-c aaa aab aac aad aah aar aas ab- aba abb abc abd abh abr abs ac- aca acb acc acd ach acr acs ad- ada adb adc add adh adr ads aha ahb ahc ahd ahh ahr ahs ar- ara arb arc ard arh arr ars as- asa asb asc asd ash asr ass baa bab bac bad bah bar bas bba bbb bbc bbd bbh bbr bbs bca bcb bcc bcd bch bcr bcs bda bdb bdc bdd bdh bdr bds bha bhb bhc bhd bhh bhr bhs bra brb brd brh brr brs bsa bsb bsc bsd bsh bsr bss c-- caa cab cac cad cah car cas cba cbb cbc cbd cbh cbr cbs cca ccb ccc ccd cch ccr ccs cda cdb cdc cdd cdh cdr cds ch- cha chb chc chd chh chr chs cra crb crc crd crh crr crs csa csb csc csd csh csr css daa dab dac dad dah dar das dba dbb dbc dbd dbh dbr dbs dca dcb dcc dcd dcr dcs dda ddb ddc ddd ddh ddr dds dh- dha dhb dhc dhd dhh dhr dhs dra drb drc drd drr drs dsa dsb dsc dsd dsh dsr dss haa hab hac had hah har has hba hbb hbc hbd hbh hbr hbs hca hcb hcc hcd hch hcr hcs hda hdb hdc hdd hdh hdr hds hha hhb hhc hhd hhh hhr hhs hr- hra hrb hrc hrd hrh hrr hrs hsa hsb hsc hsd hsh hsr hss ra- raa rab rac rad rah rar ras rba rbb rbc rbd rbh rbr rbs rca rcb rcc rcd rch rcr rcs rda rdb rdc rdd rdh rdr rds rh- rha rhb rhc rhd rhh rhr rhs rra rrb rrc rrd rrh rrr rrs rsa rsb rsc rsd rsh rsr rss saa sab sac sad sah sar sas sba sbb sbc sbd sbh sbr sbs sca scb scc scd sch scr scs sda sdb sdc sdd sdh sdr sds sh- sha shb shc shd shh shr shs sr- sra srb src srd srh srr srs ss- ssa ssb ssc ssd ssh ssr sss

a-ha aaaa aaab aaac aaad aaah aaar aaas aaba aabb aabc aabd aabh aaca aacb aacc aacd aach aacr aacs aada aadc aads aaha aahs aara aarc aard aars aasa aasc aasd aass abaa abab abac abad abar abas abb- abba abbb abbr abbs abca abcb abcc abcd abch abcr abcs abda abha abhr abhs abra abrc abrs abs- absa absd abss acaa acab acac acad acar acas acba acca accc accd acch accs acda acdb acdc acds acha achh achr achs acr- acra acrc acrr acrs acsa acsc acsd acss adaa adab adac adad adah adar adas adba adbc adcc adcs adda addc addd addr adds adha adhd adhs adra adrs adsa adsr adss ahab ahac ahad ahah ahar ahas ahha ahhs ahra ahrc ahrr ahrs ahsa ahss arab arac arad arah arar aras arba arbh arbs arc- arca arch arcs arda ardc ards arh- arhs arr- arra arrc arrh arrr arrs ars- arsa arsc arsd asaa asab asac asad asah asar asas asba asc- asca ascb ascc asch ascr asda asds asha ashs asra asrc asrs assa assc assd assh assr asss baaa baad baah baar baas baba babb babr babs bac- baca bacc bach bacs bada badb badd badh badr bads baha bahr bahs bar- bara barb barc bard barh barr bars basa basc bash bass bbad bbas bbbb bbbs bbch bbdd bbhs bbrc bcaa bcar bcas bcbc bcbs bcca bccc bccs bcda bcds bchd bchs bcra bcrs bcsa bcsc bcss bd-r bdbc bddc bddh bdhs bdsd bhar bhca bhcc bhhs bhra brab brac brad brah bras brca brcb brda brds brhs brrr brrs brsb brsr bsaa bsac bsas bsbd bscs bshs bsra bsrd bssc bssd c-cd caaa caab caac caah caas caba cabs cac- caca cacc cach cacr cada cadc cadd cadr cads caha cahs cara carb carc card carr cars casa casb casc casd cash casr cass cbac cbar cbbc cbbs cbca cbcc cbcr cbcs cbdb cbdc cbds cbha cbhs cbrd cbrh cbsa cbsc ccaa ccab ccac ccad ccar ccas ccba ccbc ccca cccb cccc cccs ccdc ccdh ccdr ccds ccha cchr cchs ccra ccrc ccrs ccsa ccsd ccss cd-r cdaa cdac cdad cdba cdcs cdda cddb cddr cdhs cdrs cdss chaa chab chac chad chah char chas chca chch chcs chha chhs chra chrb chrc chrd chrr chrs chsc chsh chsr crab crac crar cras crbc crca crcc crcr crda crdc crhs crsa crss csaa csab csac csar csas cscb cscc cscd csch cscr cscs csda csdb csdr cshs csra csrc csrd csrs cssa cssd cssr daab daad daar daas daba dabb dabs daca dacs dada dads daha dahs dara darb darc dard darr dars dasa dasb dasc dasd dash dass dbar dbas dbcc dbcs dbhs dbrs dbsa dbss dcas dcbc dcca dccb dccc dccs dcdb dcds dchs dcra dcsc dcss dddd ddrc ddss dhaa dhad dhar dhsa draa drab drac drad drar dras drba drbc drca drda drhs drra drrs drsa dsac dsba dsbc dscc dsch dscr dscs dsda dsdr dshs dsrc dsrr dssa dssc haab haad haar haas haba habs hacs hada hadh haha hahs hara harc hard harh harr hars hasa hasc hasd hash hass hbar hbbs hbcd hbds hbhs hbrs hbss hcbc hcbs hcca hccb hccc hcch hccs hcdr hchs hcrd hcsa hcsc hcss hdca hdda hdhs hdra hdss hhaa hhds hhhh hhhs hrac hrad hras hrdc hrhs hrrc hsac hsad hsas hsbc hscc hshs raab raad raas raba rabb rabs rac- raca racc rach racs rada radc radd radh radr rads raha rahr rahs rara rarb rars rasa rasc rasd rash rass rbbb rbbr rbbs rbds rbhs rbsd rbss rcac rcas rcbc rccb rccc rccs rcdc rcds rchb rchs rcrd rcsa rcsc rcsd rcss rdac rdas rdhs rhhs rrad rrah rras rrhs rrrr rsaa rscc rsch rscs rsdd rsds rshd rshs rssa sa-c saab saac saad saah saar saas saba sabb sabc