a-a a-b a-c aaa aab aac aam aan aao aar aas ab- aba abb abc abm abn abo abr abs ac- aca acb acc acm acn aco acr acs ama amb amc amm amn amo amr ams an- ana anb anc anm ann ano anr ans aoa aob aoc aom aon aoo aor aos ar- ara arb arc arm arn aro arr ars as- asa asb asc asm asn aso asr ass baa bab bac bam ban bao bar bas bba bbb bbc bbm bbn bbo bbr bbs bca bcb bcc bcm bcn bco bcr bcs bma bmb bmc bmm bmn bmo bmr bms bna bnb bnc bnn bno bnr bns boa bob boc bom bon boo bor bos bra brb brm brn bro brr brs bsa bsb bsc bsm bsn bso bsr bss c-- caa cab cac cam can cao car cas cba cbb cbc cbm cbn cbo cbr cbs cca ccb ccc ccm ccn cco ccr ccs cma cmb cmc cmm cmn cmo cmr cms cn- cna cnb cnc cnm cnn cno cnr cns co- coa cob coc com con coo cor cos cra crb crc crm crn cro crr crs csa csb csc csm csn cso csr css m-o m-r maa mab mac mam man mao mar mas mba mbb mbc mbm mbo mbr mbs mc- mca mcb mcc mcm mcn mco mcr mcs mma mmb mmc mmm mmn mmo mmr mms mna mnb mnc mnm mnn mno mnr mns moa mob moc mom mon moo mor mos mra mrb mrc mrm mrn mro mrr mrs msa msb msc msm msn mso msr mss naa nab nac nam nan nao nar nas nba nbb nbc nbm nbn nbo nbr nbs nca ncb ncc ncm ncn nco ncr ncs nma nmb nmc nmm nmn nmo nmr nms nna nnb nnc nnm nnn nno nns no- noa nob noc nom non noo nor nos nra nrb nrc nrm nrn nro nrr nrs nsa nsb nsc nsm nsn nso nsr nss oaa oab oac oam oan oao oar oas ob- oba obb obc obm obn obo obr obs oc- oca ocb occ ocm ocn oco ocr ocs om- oma omb omc omm omn omo omr oms on- ona onb onc onn ono onr ons oo- ooa oob ooc oom oon ooo oor oos or- ora orb orc orm orn oro orr ors os- osa osb osc osm osn oso osr oss ra- raa rab rac ram ran rao rar ras rba rbb rbc rbm rbn rbo rbr rbs rca rcb rcc rcm rcn rco rcr rcs rma rmb rmc rmm rmn rmo rmr rms rna rnb rnc rnm rnn rno rnr rns roa rob roc rom ron roo ror ros rra rrb rrc rrm rrn rrr rrs rsa rsb rsc rsm rsn rso rsr rss saa sab sac sam san sao sar sas sba sbb sbc sbm sbn sbo sbr sbs sca scb scc scm scn sco scr scs sma smb smc smm smn smo smr sms sna snb snc snm snn sno snr sns soa sob soc som son soo sor sos sr- sra srb src srm srn sro srr srs ss- ssa ssb ssc ssm ssn sso ssr sss

-ana aaaa aaab aaac aaam aaan aaar aaas aaba aabb aabc aabm aaca aacb aacc aacm aacn aaco aacr aacs aama aamb aamc aamn aamo aamr aams aana aaon aaoo aara aarc aarm aaro aars aasa aasc aasm aass abaa abab abac abam aban abar abas abb- abba abbb abbo abbr abbs abca abcb abcc abcn abcr abcs abma abmb abmc abms aboa abob abon aboo abor abos abra abrc abro abrs abs- absa abss acaa acab acac acan acar acas acba acca accc accm acco accs acma acmc acms acoa acom acon acor acos acr- acra acrc acrm acro acrr acrs acsa acsc acsm acss amaa amac amam aman amar amas amb- amba ambn ambo ambr ambs amca amcc amco amcs amm- amma ammo amno amns amob amoc amon amoo amor amos amra amrc amro amsa amsc amsn amso amss ana- anaa anab anac anam anan anao anar anas anba anbb anbo anca ancc anco anma anna annb anno anns ano- anoa anom anon anor anos anrc ansa anso aoba aoca aocs aoma aonb aono aora aorb aorn aors aoss arab arac aram aran arar aras arba arbs arc- arca arcm arco arcs arma armc armm armo arms arna arno arns aroa arob arom aron aroo aror aros arr- arra arrc arro arrr arrs ars- arsa arsc arso asaa asab asac asam asan asao asar asas asba asbm asbo asc- asca ascb ascc asco ascr asma asmm asmr asms asnc asno asob asoc asom ason asor asos asra asrc asrm asro asrs assa assc assn asso assr asss baaa baam baan baar baas baba babb babm babo babr babs bac- baca bacc bacn baco bacs bama bamb bamc bamm bamn bams bana banc bann bano banr bans baon baos bar- bara barb barc barm barn baro barr bars basa basc baso bass bbas bbbb bbbs bbcm bbrc bcaa bcam bcar bcas bcbc bcbs bcca bccc bccm bccs bcma bcms bcor bcos bcra bcrs bcsa bcsc bcsm bcsn bcss bmaa bman bmoc bnas bnoc bnor bnrr bnss boab boac boan boar boas boba bobb bobo bobs boca bocm boco bocs boma bomb boms bona bonc bonn bono bons boob booc boom boon boor boos bor- bora borm born boro borr bors bosa bosc bosm bosn boso boss brab brac bram bran brao bras brca brcb brmc brna brno brns broa brob broc brom bron broo bror bros brrm brrr brrs brsb brsr bsaa bsac bsam bsas bscs bsms bsns bson bsos bsra bsrm bssc bssm c-bo caaa caab caac caam caan caas caba cabo cabs cac- caca cacc cacm caco cacr cama camb camc camm camo cams cana canc cann cano cans caor caos cara carb carc carm carn caro carr cars casa casb casc casm caso casr cass cbac cbar cbbc cbbs cbca cbcc cbcm cbcn cbcr cbcs