a-ak a-ii aaaa aaab aaac aaad aaai aaas aaba aabb aabc aabd aabi aaca aacb aacc aacd aaci aack aacs aada aadc aadi aads aaib aaic aaii aais aaka aasa aasc aasd aasi aass abaa abab abac abad abai abak abas abb- abba abbb abbi abbs abca abcb abcc abcd abci abcs abda abdi abia abib abic abid abis abs- absa absd absi abss acaa acab acac acad acai acas acba acca accc accd acci accs acda acdb acdc acdi acds aci- acia acic acid acis ackd acks acsa acsc acsd acsi acss adaa adab adac adad adai adak adas adba adbc adbi adcc adci adcs adda addc addd addi adds adia adib adic adik adis adki adsa adsi adss aiai aias aiba aica aicc aicd aics aida aidb aidc aidi aids aiia aiib aiic aiid aika aiki aiks aisa aisb aisd aisi aisk akaa akai akas akca akia akid akik akis akka akki aksa aksi asaa asab asac asad asai asak asas asba asc- asca ascb ascc asci asda asds asia asic asii asik asis aska aski asks assa assc assd assi assk asss ba-i baaa baad baak baas baba babb babi babs bac- baca bacc baci back bacs bada badb badd badi bads baia baib baic baid baik bais bak- baka baki baks basa basc basi bask bass bbad bbas bbbb bbbs bbci bbdd bcaa bcas bcbc bcbs bcca bccc bcci bccs bcda bcds bcia bcis bcsa bcsc bcss bdbc bddc bdii bdsd biad biak bias biba bibb bibi bibs bica bicc bici bick bics bida bidi bids biis bis- bisa bisc bisd bisk biss bsaa bsac bsas bsbd bsci bscs bsic bssc bssd c-cd caaa caab caac caas caba cabi cabs cac- caca cacc caci cack cada cadc cadd cadi cads caia caib caic caid caik cais caka casa casb casc casd casi cask cass cbac cbbc cbbs cbca cbcc cbcs cbdb cbdc cbdi cbds cbia cbid cbka cbsa cbsc cbsi ccaa ccab ccac ccad ccai ccas ccba ccbc ccca cccb cccc ccci cccs ccdc ccdi ccds ccic ccid ccii ccis ccsa ccsd ccsi ccss cdaa cdac cdad cdai cdba cdcs cdda cddb cdic cdii cdis cdss ciaa ciak cias ciba cibc cibi cica cicc cici cics cida cidc cidi cids ciia ciid ciii ciis cika cis- cisa cisc cisd cisk ciss ckac ckbc ckbi ckck ckcs cksa cksb csaa csab csac csak csas cscb cscc cscd csci cscs csda csdb csia csib csid csik csis cska csks cssa cssd daab daad daas daba dabb dabs daca daci dacs dada dadi dads daia daid daik dais daka daki daks dasa dasb dasc dasd dasi dask dass dbas dbcc dbcs dbsa dbss dcas dcbc dcca dccb dccc dcci dccs dcdb dcds dcia dcii dcis dcsc dcss dddd ddss dia- diab diac diad diak dias diba dibb dibs dica dici dick dida didi dids diii diis dika diki dis- disa disc disd disi disk diss dkba dkdc dkid dsac dsba dsbc dscc dscs dsda dssa dssc dssi iaaa iaac iaai iaas iaba iaca iacc iacs iadb iadc iaia iais iasa iasc iasi iask ibac ibad ibas ibca ibcs ibia ibid ibis ibsa ibss icaa icab icac icad icai icas icbc icbd icbs icca iccb iccc icci iccs icdc icdd icis icks icsa icsb icsc icsd icsi icss idad idas idca idda idia idic idid idis idsa idsc idss iiac iias iica iicd iida iiii iiis iisc iisd iisi ikid ikki is-a isac isad isai isak isas isba isbd isca iscc iscd isci iscs isda isdb isdc isds isia isic isis iska issa issc issi isss k-ci k-id kaaa kaab kaai kaak kaas kaba kabb kabc kabd kabi kacb kacc kacd kaci kacs kad- kada kadd kadi kads kaia kaib kaic kaid kaii kaik kais kaka kakc kaki kakk kaks kas- kasa kasb kasc kasi kask kass kbaa kbab kbac kbad kbai kbak kbas kbba kbbb kbbc kbbd kbbi kbbk kbbs kbca kbcb kbci kbck kbcs kbdb kbdi kbds kbia kbib kbic kbid kbik kbis kbkb kbkk kbsa kbsb kbsi kbsk kbss kcaa kcab kcac kcad kcai kcas kcba kcbc kcbd kcbi kcbk kcbs kcca kccb kccc kccd kcci kcck kcda kcdc kcdd kcdi kcds kcic kcid kcii kcis kckc kckk kcsa kcsb kcsc kcsd kcsi kcss kdaa kdab kdac kdad kdai kdak kdbb kdbi kdbs kdca kdcc kdcd kddb kddc kddd kddi kddk kdia kdic kdis kdka kdkb kdkd kdkk kdsc kdsd kdsk kdss kiab kiac kiad kiai kias kiba kibb kibc kibi kibs kica kicb kicc kicd kick kics kida kidb kidd kidi kidk kids kiia kiic kiid kiii kiik kiis kika kikc kikd kiki kikk kisa kisc kisd kisi kisk kiss kkaa kkac kkai kkba kkbb kkbd kkbi kkbs kkcb kkcd kkci kkck kkcs kkda kkdc kkdd kkia kkic kkid kkik kkkk kksa kksd kksi kkss ksab ksac ksak ksas ksba ksbc ksbi ksbs ksca kscb ksci ksck kscs ksdc ksdi ksdk ksds ksib ksid ksii ksik ksis kska kskb kskd kskk ksks kssa kssi ksss s-ib s-ic s-ii sa-c saab saac saad saak saas saba sabb sabc sabi sabs saca sacc sacd saci sack sacs sada sadb sadc sadd sadi sads saia saic said saik sais saka sakb saki sakk saks sasa sasc sasd sasi sask sass sbaa sbac sbai sbas sbbs sbca sbcc sbcs sbds sbia sbic sbsa sbsd sbsi scaa scab scac scad scai scak scas scba scbi sccc sccs scda scdc scds sci- scia scic scid scis sck- scsa scsc scsd scsi sdak sdba sdcc sddc sdds sdib sdic sdsc sdss siaa siab siac siai siak sias siba sibc sibi sibs sica sicc sici sick sics sida sidd sidi sids siik sika siki siks sisa sisc sisd sisi sisk siss skab skac skad skai skia skic skid skik skis sksd skss ssaa ssab ssac ssas ssca sscc ssci sscs ssdc ssdd ssid ssis sssa sssb sssc sssi ssss