a-a a-b a-c aaa aab aac aah aan aar aas ab- aba abb abc abh abn abr abs ac- aca acb acc ach acn acr acs aha ahb ahc ahh ahn ahr ahs an- ana anb anc anh ann anr ans ar- ara arb arc arh arn arr ars as- asa asb asc ash asn asr ass baa bab bac bah ban bar bas bba bbb bbc bbh bbn bbr bbs bca bcb bcc bch bcn bcr bcs bha bhb bhc bhh bhr bhs bna bnb bnc bnn bnr bns bra brb brh brn brr brs bsa bsb bsc bsh bsn bsr bss c-- caa cab cac cah can car cas cba cbb cbc cbh cbn cbr cbs cca ccb ccc cch ccn ccr ccs ch- cha chb chc chh chn chr chs cn- cna cnb cnc cnh cnn cnr cns cra crb crc crh crn crr crs csa csb csc csh csn csr css haa hab hac hah han har has hba hbb hbc hbh hbn hbr hbs hca hcb hcc hch hcn hcr hcs hha hhb hhc hhh hhn hhr hhs hna hnb hnc hnh hnn hns hr- hra hrb hrc hrh hrn hrr hrs hsa hsb hsc hsh hsn hsr hss naa nab nac nah nan nar nas nba nbb nbc nbn nbr nbs nca ncb ncc nch ncn ncr ncs nha nhb nhc nhh nhn nhr nhs nna nnb nnc nnh nnn nns nra nrb nrc nrn nrr nrs nsa nsb nsc nsh nsn nsr nss ra- raa rab rac rah ran rar ras rba rbb rbc rbh rbn rbr rbs rca rcb rcc rch rcn rcr rcs rh- rha rhb rhc rhh rhn rhr rhs rna rnb rnc rnh rnn rnr rns rra rrb rrc rrh rrn rrr rrs rsa rsb rsc rsh rsn rsr rss saa sab sac sah san sar sas sba sbb sbc sbh sbn sbr sbs sca scb scc sch scn scr scs sh- sha shb shc shh shn shr shs sna snb snc snn snr sns sr- sra srb src srh srn srr srs ss- ssa ssb ssc ssh ssn ssr sss

-ana a-ha aaaa aaab aaac aaah aaan aaar aaas aaba aabb aabc aabh aaca aacb aacc aach aacn aacr aacs aaha aahs aana aara aarc aars aasa aasc aass abaa abab abac aban abar abas abb- abba abbb abbr abbs abca abcb abcc abch abcn abcr abcs abha abhr abhs abra abrc abrs abs- absa abss acaa acab acac acan acar acas acba acca accc acch accs acha achh achr achs acr- acra acrc acrr acrs acsa acsc acss ahab ahac ahah ahar ahas ahha ahhs ahra ahrc ahrr ahrs ahsa ahss ana- anaa anab anac anah anan anar anas anba anbb anca ancc anha anhs anna annb anns anrc ansa arab arac arah aran arar aras arba arbh arbs arc- arca arch arcs arh- arhs arna arns arr- arra arrc arrh arrr arrs ars- arsa arsc asaa asab asac asah asan asar asas asba asc- asca ascb ascc asch ascr asha ashs asnc asra asrc asrs assa assc assh assn assr asss baaa baah baan baar baas baba babb babr babs bac- baca bacc bach bacn bacs baha bahn bahr bahs bana banc banh bann banr bans bar- bara barb barc barh barn barr bars basa basc bash bass bbas bbbb bbbs bbch bbhs bbrc bcaa bcar bcas bcbc bcbs bcca bccc bccs bchs bcra bcrs bcsa bcsc bcsn bcss bhan bhar bhca bhcc bhhs bhra bnas bnhs bnrr bnss brab brac brah bran bras brca brcb brhs brna brns brrr brrs brsb brsr bsaa bsac bsas bscs bshs bsns bsra bssc caaa caab caac caah caan caas caba cabs cac- caca cacc cach cacr caha cahn cahs cana canc canh cann cans cara carb carc carn carr cars casa casb casc cash casr cass cbac cbar cbbc cbbs cbca cbcc cbcn cbcr cbcs cbha cbhs cbna cbrh cbrn cbsa cbsc cbsn ccaa ccab ccac ccar ccas ccba ccbc ccbn ccca cccb cccc cccs ccha cchr cchs ccna ccnb ccnc ccnr ccns ccra ccrc ccrs ccsa ccsn ccss chaa chab chac chah chan char chas chca chch chcs chha chhs chnb chnc chnr chns chra chrb chrc chrn chrr chrs chsc chsh chsr cnaa cnac cnas cnbc cnhs cnna cnrc cnrr cnsa cnss crab crac cran crar cras crbc crca crcc crcr crhs crna crns crsa crss csaa csab csac csar csas cscb cscc csch cscr cscs cshs csra csrc csrs cssa cssr haab haan haar haas haba habs hacs haha hahn hahs hana hanc hann hans hara harc harh harn harr hars hasa hasc hash hass hbar hbbs hbhs hbrs hbss hcbc hcbs hcca hccb hccc hcch hccs hchs hcsa hcsc hcss hhaa hhhh hhhs hncs hnhs hnna hrac hran hras hrhs hrrc hsac hsas hsbc hscc hscn hshs naaa naab naac naan naar naas naba nabc nabs naca nacc nach nacs naha nahr nahs nan- nana nanb nann nans nara narc narh narn narr nars nas- nasa nasb nasc nash nasr nass nbaa nbar nbas nbbc nbca nbcc nbcs nbhs ncaa ncac ncar ncba ncbc ncbs ncca nccc nccn nccr nccs ncha nchc nchs ncna ncnc ncra ncrc ncsa ncsc ncss nhcc nhhs nhnn nhra nhrc nhsc nnhs nnnn nnsa nnss nrab nras nrca nrcs nrhs nrna nrrc nrsa nrsc nsaa nsac nsar nsca nscc nscs nshs nsna nsnr nsra nsrc nssa nssb nssc nssr nsss raab raan raas raba rabb rabs rac- raca racc rach racs raha rahn rahr rahs rana ranc rann rans rara rarb rars rasa rasc rash rass rbbb rbbr rbbs rbhs rbss rcac rcas rcbc rccb rccc rccs rchb rchs rcnr rcsa rcsc rcss rhhs rnas rnbr rncs rnsh rrah rras rrhs rrna rrrr rsaa rscc rsch rscn rscs rshs rsna rsnn rsnr rssa sa-c saab saac saah saan saar saas saba sabb sabc sabr sabs saca sacc sacn sacr sacs saha sahn sahr sahs sana sann sanr sans sara sarc sarh sarn sarr sars sasa sasc sash sass sbaa