-ana a-ak a-ok aaaa aaab aaac aaan aaas aaba aabb aabc aaca aacb aacc aack aacn aaco aacs aaka aana aaon aaoo aasa aasc aass abaa abab abac abak aban abas abb- abba abbb abbo abbs abca abcb abcc abcn abcs aboa abob abok abon aboo abos abs- absa abss acaa acab acac acan acas acba acca accc acco accs acks acoa acon acos acsa acsc acss akaa akan akao akas akca akka akko akna akok akon akos aksa ana- anaa anab anac anak anan anao anas anba anbb anbo anca ancc anco ank- anka anko anna annb anno anns ano- anoa anon anos ansa anso aoba aoca aocs aoks aonb aono aoss asaa asab asac asak asan asao asas asba asbo asc- asca ascb ascc asco aska asko asks asnc asno asob asoc asok ason asos assa assc assk assn asso asss baaa baak baan baas baba babb babo babs bac- baca bacc back bacn baco bacs bak- baka bako baks bana banc bank bann bano bans baon baos basa basc bask baso bass bbas bbbb bbbs bcaa bcas bcbc bcbs bcca bccc bccs bcos bcsa bcsc bcsn bcss bnas bnoc bnss boab boac boak boan boas boba bobb bobo bobs boca bock boco bocs boka bokn boko boks bona bonc bonk bonn bono bons boob booc book boon boos bosa bosc bosk bosn boso boss bsaa bsac bsas bscs bsns bson bsos bssc c-bo caaa caab caac caan caas caba cabo cabs cac- caca cacc cack caco caka cana canc cank cann cano cans caos casa casb casc cask caso cass cbac cbbc cbbs cbca cbcc cbcn cbcs cbka cbkn cbko cbna cbsa cbsc cbsn ccaa ccab ccac ccas ccba ccbc ccbn ccca cccb cccc cccs ccna ccnb ccnc ccns ccob ccoc ccsa ccsn ccss ckac ckan ckbc ckck ckco ckcs cknb cknc ckns ckoa ckob ckoc ckoo ckos cksa cksb ckso cnaa cnac cnas cnbc cnco cnna cnsa cnss coak coan coas coba cobb cobo cobs coca cock coco cok- coka coko con- cona conc conk conn cono cons coob cook coon coos cosa cosc coso coss csaa csab csac csak csao csas cscb cscc csco cscs cska csks csob csos cssa k-os kaaa kaab kaak kaan kaas kaba kabb kabc kabo kacb kacc kaco kacs kaka kakc kakk kakn kako kaks kana kanb kann kano kans kaoa kaoc kaok kaon kaos kas- kasa kasb kasc kask kasn kaso kass kbaa kbab kbac kbak kbas kbba kbbb kbbc kbbk kbbo kbbs kbca kbcb kbck kbco kbcs kbkb kbkk kbko kbna kbnn kbno kboa kbob kboc kbok kbon kboo kbos kbsa kbsb kbsk kbsn kbso kbss kcaa kcab kcac kcas kcba kcbc kcbk kcbs kcca kccb kccc kcck kckc kckk kckn kcko kcnb kcno kcns kcob kcon kcos kcsa kcsb kcsc kcsn kcss kkaa kkac kkan kkba kkbb kkbn kkbo kkbs kkcb kkck kkcn kkco kkcs kkkk kknb kknn kkno kkns kkoa kkob kkon kkoo kksa kksn kkss knaa knab knac knan knas knba knbb knbc knbn knca kncb knck kncn knco knkk knnb knnk knns knob knoc knok knon knsa knsb knsc knsk knsn knso knss koab koac koak koan koas koba kobb kobc kobk kobn kobo kobs koca kocb kock kocn kocs koka kokb kokc kokk kokn koko koks kona konc konk kono koob kooc kook koon kooo koos kos- kosa kosb kosc koso koss ksab ksac ksak ksan ksas ksba ksbc ksbn ksbs ksca kscb ksck kscn ksco kscs kska kskb kskk kskn ksko ksks ksna ksnb ksnc ksnk ksnn ksns ksob ksoc ksok kson ksoo ksos kssa kssn ksso ksss naaa naab naac naan naas naba nabc nabk nabo nabs naca nacc nack naco nacs naka nako naks nan- nana nanb nann nano nans naoc naos nas- nasa nasb nasc nask naso nass nbaa nbak nbas nbbc nbbo nbca nbcc nbco nbcs ncaa ncac ncba ncbc ncbs ncca nccc nccn nccs ncna ncnc ncoa ncoc ncos ncsa ncsc ncss nkok nnnn nnos nnsa nnss noaa noac noak noba nobc nobo nobs nock noco nocs noko non- nona nonn nono nons noo- noob nook noon nooo noos nos- nosa nosk noss nsaa nsac nsbo nsca nscc nscs nskk nsna nsok nsos nssa nssb nssc nsso nsss oaks oasc oass obak oban obas obba obbo obkb obok obon obos obsn obss ocab ocac ocak ocan ocas ocbc occa occc occn ocks ocna ocon ocos ocsa okak okan okas okka okko okna okno okok okon oksa okso onab onan onas onc- onca onco onna onno onon onos onsc onso ooaa ooak ooba oona oons oooo ooos oosa osak osan osas osba osca oscc osco osno osoo osos ossa ossb osso s-os sa-c saab saac saak saan saas saba sabb sabc sabo sabs saca sacc sack sacn saco sacs saka sakb sakk sako saks sana sank sann sano sans saon saos sasa sasc sask saso sass sbaa sbac sbas sbbs sbca sbcc sbcs sbsa scaa scab scac scak scan scas scba sccc sccs sck- scna scob scok scon scoo scsa scsc scsn scso skab skac skan skn- skon skss snab snak snas snba snca sncc snco snns snoa snob snoc snoo snos soak soan soas soba sobo sobs soca sock soco socs soka sokk sokn soko son- sona sonk sono sons sook soon soos sosa soso soss ssaa ssab ssac ssan ssao ssas ssbn ssca sscc sscs ssns ssoc sssa sssb sssc ssss