-ana a-ak aaaa aaab aaac aaad aaan aaar aaas aaba aabb aabc aabd aaca aacb aacc aacd aack aacn aacr aacs aada aadc aads aaka aana aand aara aarc aard aars aasa aasc aasd aass abaa abab abac abad abak aban abar abas abb- abba abbb abbr abbs abca abcb abcc abcd abcn abcr abcs abda abra abrc abrs abs- absa absd abss acaa acab acac acad acan acar acas acba acca accc accd accs acda acdb acdc acds ackd acks acr- acra acrc acrr acrs acsa acsc acsd acss adaa adab adac adad adak adan adar adas adba adbc adcc adcs adda addc addd addn addr adds adna adns adra adrs adsa adsr adss akaa akan akar akas akca akdn akka akna akr- akra aksa ana- anaa anab anac anad anak anan anar anas anba anbb anca ancc and- anda andr ands ank- anka anna annb anns anrc ansa ansd arab arac arad arak aran arar aras arba arbs arc- arca arcs arda ardc ards arka arks arna arnd arnk arns arr- arra arrc arrk arrr arrs ars- arsa arsc arsd arsk asaa asab asac asad asak asan asar asas asba asc- asca ascb ascc ascr asda asds aska askr asks asnc asra asrc asrs assa assc assd assk assn assr asss baaa baad baak baan baar baas baba babb babr babs bac- baca bacc back bacn bacs bada badb badd badr bads bak- baka bakr baks bana banc band bank bann banr bans bar- bara barb barc bard bark barn barr bars basa basc bask bass bbad bbas bbbb bbbs bbdd bbrc bcaa bcar bcas bcbc bcbs bcca bccc bccs bcda bcds bcra bcrs bcsa bcsc bcsn bcss bd-r bdbc bddc bdna bdsd bnas bnrr bnss brab brac brad brak bran bras brca brcb brda brds brka brkb brna brns brrr brrs brsb brsr bsaa bsac bsas bsbd bscs bsnd bsns bsra bsrd bssc bssd c-cd caaa caab caac caan caas caba cabs cac- caca cacc cack cacr cada cadc cadd cadr cads caka cana canc cand cank cann cans cara carb carc card cark carn carr cars casa casb casc casd cask casr cass cbac cbar cbbc cbbs cbca cbcc cbcn cbcr cbcs cbdb cbdc cbdn cbds cbka cbkn cbkr cbna cbnd cbrd cbrn cbsa cbsc cbsn ccaa ccab ccac ccad ccar ccas ccba ccbc ccbn ccca cccb cccc cccs ccdc ccdn ccdr ccds ccna ccnb ccnc ccnr ccns ccra ccrc ccrs ccsa ccsd ccsn ccss cd-r cdaa cdac cdad cdba cdcs cdda cddb cddr cdna cdnb cdnc cdrs cdss ckac ckan ckbc ckck ckcs cknb cknc ckns ckrc ckrd cksa cksb cnaa cnac cnas cnbc cnda cndd cnna cnrc cnrr cnsa cnss crab crac cran crar cras crbc crca crcc crcr crda crdc crkc crna crns crsa crss csaa csab csac csak csar csas cscb cscc cscd cscr cscs csda csdb csdn csdr cska csks csra csrc csrd csrs cssa cssd cssr d-na daab daad daan daar daas daba dabb dabs daca dacs dada dads daka daks dana dand dank dann danr dans dara darb darc dard dark darn darr dars dasa dasb dasc dasd dask dass dbar dbas dbcc dbcs dbrn dbrs dbsa dbss dcas dcbc dcca dccb dccc dccs dcdb dcds dcns dcra dcrk dcsc dcss dddd ddrc ddss dkba dkdc dnaa dnab dnac dnad dnan dnas dncs dnrc dnsa dnsc draa drab drac drad drak drar dras drba drbc drca drda drna drra drrs drsa dsac dsba dsbc dscc dscn dscr dscs dsda dsdr dsrc dsrr dssa dssc dssn kaaa kaab kaak kaan kaar kaas kaba kabb kabc kabd kabr kacb kacc kacd kacs kad- kada kadd kadr kads kaka kakc kakk kakn kaks kana kanb kand kann kans kara karb kard kark karn karr kars kas- kasa kasb kasc kask kasn kasr kass kbaa kbab kbac kbad kbak kbar kbas kbba kbbb kbbc kbbd kbbk kbbr kbbs kbca kbcb kbck kbcr kbcs kbdb kbdn kbdr kbds kbkb kbkk kbkr kbna kbnd kbnn kbnr kbra kbrb kbrc kbrd kbrk kbrn kbsa kbsb kbsk kbsn kbsr kbss kcaa kcab kcac kcad kcar kcas kcba kcbc kcbd kcbk kcbr kcbs kcca kccb kccc kccd kcck kccr kcda kcdc kcdd kcdr kcds kckc kckk kckn kckr kcnb kcnd kcnr kcns kcrc kcrn kcrr kcrs kcsa kcsb kcsc kcsd kcsn kcsr kcss kdaa kdab kdac kdad kdak kdar kdbb kdbn kdbr kdbs kdca kdcc kdcd kdcr kddb kddc kddd kddk kddr kdka kdkb kdkd kdkk kdkn kdkr kdna kdnd kdnk kdnn kdnr kdns kdrb kdrs kdsc kdsd kdsk kdsn kdsr kdss kkaa kkac kkan kkar kkba kkbb kkbd kkbn kkbr kkbs kkcb kkcd kkck kkcn kkcr kkcs kkda kkdc kkdd kkkk kknb kknd kknn kkns kkrb kkrc kkrk kkrn kkrr kkrs kksa kksd kksn kksr kkss knaa knab knac knan knar knas knba knbb knbc knbn knbr knca kncb knck kncn kncr knda kndb kndc kndd kndk kndn kndr knkk knnb knnd knnk knnr knns knrb knrk knrs knsa knsb knsc knsd knsk knsn knsr knss krab krac krad krak kran krar kras krba krbb krbd krbk krbr krca krcb krcc krcd krcn krcs krda krdc krdd krdr krds krka krkc krkd krkk krkn krkr krks krna krnb krnd krnk krnn krrb krrc krrk krrn krrr krrs krsa krsc krsd krsk krsn krsr krss ksab ksac ksak ksan ksar ksas ksba ksbc ksbn ksbr ksbs ksca kscb ksck kscn kscr kscs ksdc ksdk ksdn ksdr ksds kska kskb kskd kskk kskn kskr ksks ksna ksnb ksnc ksnd ksnk ksnn ksnr ksns ksra ksrb ksrn ksrr ksrs kssa kssn kssr ksss naaa naab naac naad naan naar naas naba nabc nabk nabs naca nacc nacd nack nacs nada nadc nadk nadr nads naka naks nan- nana nanb nand nann nans nara narc nard nark narn narr nars nas- nasa nasb nasc nasd nask nasr nass nbaa nbad nbak nbar nbas nbbc nbca nbcc nbcs ncaa ncac ncar ncba ncbc ncbs ncca nccc nccn nccr nccs ncda ncdc ncdn ncdr ncds ncna ncnc ncnd ncra ncrc ncsa ncsc ncss