a-a a-b a-c a-z aaa aab aac aan aao aar aas aaz ab- aba abb abc abn abo abr abs abz ac- aca acb acc acn aco acr acs acz an- ana anb anc ann ano anr ans anz aoa aob aoc aon aoo aor aos ar- ara arb arc arn aro arr ars arz as- asa asb asc asn aso asr ass asz az- aza azb azn azo azs azz baa bab bac ban bao bar bas baz bba bbb bbc bbn bbo bbr bbs bca bcb bcc bcn bco bcr bcs bcz bna bnb bnc bnn bno bnr bns bnz boa bob boc bon boo bor bos boz bra brb brn bro brr brs brz bsa bsb bsc bsn bso bsr bss bza bzn bzo bzr bzs bzz c-- caa cab cac can cao car cas caz cba cbb cbc cbn cbo cbr cbs cbz cca ccb ccc ccn cco ccr ccs ccz cn- cna cnb cnc cnn cno cnr cns co- coa cob coc con coo cor cos coz cra crb crc crn cro crr crs crz csa csb csc csn cso csr css csz cz- czc czo naa nab nac nan nao nar nas naz nba nbb nbc nbn nbo nbr nbs nca ncb ncc ncn nco ncr ncs nna nnb nnc nnn nno nns nnz no- noa nob noc non noo nor nos noz nra nrb nrc nrn nro nrr nrs nrz nsa nsb nsc nsn nso nsr nss nsz nzb nzo nzs nzz oaa oab oac oan oao oar oas ob- oba obb obc obn obo obr obs oc- oca ocb occ ocn oco ocr ocs ocz on- ona onb onc onn ono onr ons oo- ooa oob ooc oon ooo oor oos or- ora orb orc orn oro orr ors orz os- osa osb osc osn oso osr oss oza ozo ozs ozz ra- raa rab rac ran rao rar ras raz rba rbb rbc rbn rbo rbr rbs rca rcb rcc rcn rco rcr rcs rna rnb rnc rnn rno rnr rns rnz roa rob roc ron roo ror ros roz rra rrb rrc rrn rrr rrs rsa rsb rsc rsn rso rsr rss rza rzb rzo saa sab sac san sao sar sas saz sba sbb sbc sbn sbo sbr sbs sca scb scc scn sco scr scs sna snb snc snn sno snr sns soa sob soc son soo sor sos soz sr- sra srb src srn sro srr srs ss- ssa ssb ssc ssn sso ssr sss ssz sza szr zaa zab zac zan zao zar zas zaz zbb zbc zbr zbs zco zcs znc znn zno zns zo- zoa zob zoc zon zoo zor zos zro zrs zsa zsz zzr zzs zzz

-ana aaaa aaab aaac aaan aaar aaas aaba aabb aabc aaca aacb aacc aacn aaco aacr aacs 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 abcn abcr abcs aboa abob abon aboo abor abos abra abrc abro abrs abs- absa abss abza acaa acab acac acan acar acas acba acca accc acco accs acoa acon acor acos acr- acra acrc acro acrr acrs acsa acsc acss ana- anaa anab anac anan anao anar anas anaz anba anbb anbo anca ancc anco anna annb anno anns ano- anoa anon anor anos anrc ansa anso anza aoba aoca aocs aonb aono aora aorb aorn aors aoss arab arac aran arar aras arba arbs arc- arca arco arcs arna arno arns aroa arob aron aroo aror aros aroz arr- arra arrc arro arrr arrs ars- arsa arsc arso arza arzo asaa asab asac asan asao asar asas asba asbo asc- asca ascb ascc asco ascr asnc asno asob asoc ason asor asos asra asrc asro asrs assa assc assn asso assr asss aza- azab azan azar azas azaz azca azna azo- azon azoo azor azos azra azza azzo baaa baan baar baas baaz baba babb babo babr babs bac- baca bacc bacn baco bacs bacz bana banc bann bano banr bans banz baon baos bar- bara barb barc barn baro barr bars barz basa basc baso bass baza bazo bbas bbbb bbbs bbrc bcaa bcar bcas bcbc bcbs bcca bccc bccs bcor bcos bcoz bcra bcrs bcsa bcsc bcsn bcss bnas bnoc bnor bnrr bnss boab boac boan boar boas boaz boba bobb bobo bobs boca boco bocs bona bonc bonn bono bons boob booc boon boor boos booz bor- bora born boro borr bors borz bosa bosc bosn boso boss boza bozo brab brac bran brao bras braz brca brcb brna brno brns broa brob broc bron broo bror bros broz brrr brrs brsb brsr brza bsaa bsac bsas bscs bsns bson bsos bsra bssc bzzz c-bo caaa caab caac caan caas caba cabo cabs cac- caca cacc caco cacr cana canc cann cano cans canz caor caos caoz cara carb carc carn caro carr cars casa casb casc caso casr cass caza cazo cbac cbar cbbc cbbs cbca cbcc cbcn cbcr cbcs cbna cbrn cbsa cbsc cbsn ccaa ccab ccac ccar ccas ccba ccbc ccbn ccca cccb cccc cccs ccna ccnb ccnc ccnr ccns ccob ccoc ccra ccrc ccrs ccsa ccsn ccss cnaa cnac cnas cnbc cnco cnna cnnz cnrc cnrr cnsa cnss coan coas coba cobb cobo cobs coca coco con- cona conc conn cono cons coob coon coos cor- cora corb corc corn coro corr cors cosa cosc coso coss cozz crab crac cran crar cras crbc crca crcc crcr crcz crna crns crob croc cron croo cror croz crsa crss csaa csab csac csao csar csas cscb cscc csco cscr cscs csnz csob csor csos csra csrc csrs cssa cssr czar czon naaa naab naac naan naar naas naba nabc nabo nabs naca nacc naco nacs nan- nana nanb nann nano nans naoc naor naos nara narc narn naro narr nars narz nas- nasa nasb nasc naso nasr nass naza nazo nazz nbaa nbar nbas nbbc nbbo