a-a a-b a-c aaa aab aac aah aan aao aar aas ab- aba abb abc abh abn abo abr abs ac- aca acb acc ach acn aco acr acs aha ahb ahc ahh ahn aho ahr ahs an- ana anb anc anh ann ano anr ans aoa aob aoc aoh aon aoo aor aos ar- ara arb arc arh arn aro arr ars as- asa asb asc ash asn aso asr ass baa bab bac bah ban bao bar bas bba bbb bbc bbh bbn bbo bbr bbs bca bcb bcc bch bcn bco bcr bcs bha bhb bhc bhh bho bhr bhs bna bnb bnc bnn bno bnr bns boa bob boc boh bon boo bor bos bra brb brh brn bro brr brs bsa bsb bsc bsh bsn bso bsr bss c-- caa cab cac cah can cao car cas cba cbb cbc cbh cbn cbo cbr cbs cca ccb ccc cch ccn cco ccr ccs ch- cha chb chc chh chn cho chr chs cn- cna cnb cnc cnh cnn cno cnr cns co- coa cob coc coh con coo cor cos cra crb crc crh crn cro crr crs csa csb csc csh csn cso csr css haa hab hac hah han hao har has hba hbb hbc hbh hbn hbo hbr hbs hca hcb hcc hch hcn hco hcr hcs hha hhb hhc hhh hhn hho hhr hhs hna hnb hnc hnh hnn hno hns hoa hob hoc hoh hon hoo hor hos hr- hra hrb hrc hrh hrn hro hrr hrs hsa hsb hsc hsh hsn hsr hss naa nab nac nah nan nao nar nas nba nbb nbc nbn nbo nbr nbs nca ncb ncc nch ncn nco ncr ncs nha nhb nhc nhh nhn nhr nhs nna nnb nnc nnh nnn nno nns no- noa nob noc noh non noo nor nos nra nrb nrc nrn nro nrr nrs nsa nsb nsc nsh nsn nso nsr nss oaa oab oac oah oan oao oar oas ob- oba obb obc obh obn obo obr obs oc- oca ocb occ och ocn oco ocr ocs oha ohc ohh ohn oho ohr ohs on- ona onb onc onh onn ono onr ons oo- ooa oob ooc ooh oon ooo oor oos or- ora orb orc orh orn oro orr ors os- osa osb osc osh osn oso osr oss ra- raa rab rac rah ran rao rar ras rba rbb rbc rbh rbn rbo rbr rbs rca rcb rcc rch rcn rco rcr rcs rh- rha rhb rhc rhh rhn rho rhr rhs rna rnb rnc rnh rnn rno rnr rns roa rob roc roh ron roo ror ros rra rrb rrc rrh rrn rrr rrs rsa rsb rsc rsh rsn rso rsr rss saa sab sac sah san sao sar sas sba sbb sbc sbh sbn sbo sbr sbs sca scb scc sch scn sco scr scs sh- sha shb shc shh shn sho shr shs sna snb snc snn sno snr sns soa sob soc soh son soo sor sos sr- sra srb src srh srn sro srr srs ss- ssa ssb ssc ssh ssn sso ssr sss

-ana a-ha aaaa aaab aaac aaah aaan aaar aaas aaba aabb aabc aabh aaca aacb aacc aach aacn aaco aacr aacs aaha aahs aana aaon aaoo aara aarc aaro aars aasa aasc aass abaa abab abac aban abar abas abb- abba abbb abbo abbr abbs abca abcb abcc abch abcn abcr abcs abha abho abhr abhs aboa abob aboh abon aboo abor abos abra abrc abro abrs abs- absa abss acaa acab acac acan acar acas acba acca accc acch acco accs acha achh acho achr achs acoa acoh acon acor acos acr- acra acrc acro acrr acrs acsa acsc acss ahab ahac ahah ahar ahas ahha ahhs ahoa ahor ahra ahrc ahrr ahrs ahsa ahso ahss ana- anaa anab anac anah anan anao anar anas anba anbb anbo anca ancc anco anha anhs anna annb anno anns ano- anoa anon anor anos anrc ansa anso aoah aoba aoca aocs aonb aono aora aorb aorn aors aoss arab arac arah aran arar aras arba arbh arbs arc- arca arch arco arcs arh- arhs arna arno arns aroa arob aron aroo aror aros arr- arra arrc arrh arro arrr arrs ars- arsa arsc arso asaa asab asac asah asan asao asar asas asba asbo asc- asca ascb ascc asch asco ascr asha ashs asnc asno asob asoc ason asor asos asra asrc asro asrs assa assc assh assn asso assr asss baaa baah baan baar baas baba babb babo babr babs bac- baca bacc bach bacn baco bacs baha bahn baho bahr bahs bana banc banh bann bano banr bans baoh baon baos bar- bara barb barc barh barn baro barr bars basa basc bash baso bass bbas bbbb bbbs bbch bbhs bbrc bcaa bcar bcas bcbc bcbs bcca bccc bccs bchs bcor bcos bcra bcrs bcsa bcsc bcsn bcss bhan bhao bhar bhca bhcc bhhs bhor bhra bnas bnhs bnoc bnor bnrr bnss boab boac boan boar boas boba bobb bobo bobs boca boch boco bocs boha bohn boho bohr bohs bona bonc bonn bono bons boob booc booh boon boor boos bor- bora borh born boro borr bors bosa bosc bosh bosn boso boss brab brac brah bran brao bras brca brcb brhs brna brno brns broa brob broc broh bron broo bror bros brrr brrs brsb brsr bsaa bsac bsas bscs bshs bsns bson bsos bsra bssc c-bo caaa caab caac caah caan caas caba cabo cabs cac- caca cacc cach caco cacr caha cahn cahs cana canc canh cann cano cans caor caos cara carb carc carn caro carr cars casa casb casc cash caso 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 ccob ccoc ccra ccrc ccrs ccsa ccsn ccss