a-do a-ii aaaa aaab aaac aaad aaai aaas aaba aabb aabc aabd aabi aaca aacb aacc aacd aaci aaco aacs aada aadc aadi aads aaib aaic aaii aais aaoo aasa aasc aasd aasi aass abaa abab abac abad abai abas abb- abba abbb abbi abbo abbs abca abcb abcc abcd abci abcs abda abdi abdo abia abib abic abid abis aboa abob abod aboo abos abs- absa absd absi abss acaa acab acac acad acai acas acba acca accc accd acci acco accs acda acdb acdc acdi acds aci- acia acic acid acis acoa acod acos acsa acsc acsd acsi acss adaa adab adac adad adai adao adas adba adbc adbi adcc adci adcs adda addc addd addi addo adds adia adib adic adio adis adob adoc adod adoo ados adsa adsi adso adss aiai aias aiba aibo aica aicc aicd aics aida aidb aidc aidi aids aiia aiib aiic aiid aioc aioi aisa aisb aisd aisi aiso aoba aoca aocs aosd aoss asaa asab asac asad asai asao asas asba asbo asc- asca ascb ascc asci asco asda asdo asds asia asic asii asio asis asob asoc asod asoi asos assa assc assd assi asso asss ba-i baaa baad baas baba babb babi babo babs bac- baca bacc baci baco bacs bada badb badd badi bado bads baia baib baic baid baio bais baos basa basc basi baso bass bbad bbas bbbb bbbs bbci bbdd bbdo bcaa bcas bcbc bcbs bcca bccc bcci bccs bcda bcds bcia bcis bcos bcsa bcsc bcss bdbc bddc bdii bdos bdsd biad biao bias biba bibb bibi bibo bibs bica bicc bici bico bics bida bidi bido bids biis bio- bioc bioi bios bis- bisa bisc bisd biso biss boab boac boad boai boas boba bobb bobi bobo bobs boca boco bocs boda bodb bodi bodo bods boi- boid boii bois boob booc bood boos bosa bosc bosi boso boss bsaa bsac bsas bsbd bsci bscs bsic bsod bsos bssc bssd c-bo c-cd caaa caab caac caas caba cabi cabo cabs cac- caca cacc caci caco cada cadc cadd cadi cado cads caia caib caic caid caio cais caod caoi caos casa casb casc casd casi caso cass cbac cbbc cbbs cbca cbcc cbcs cbdb cbdc cbdi cbdo cbds cbia cbid cbsa cbsc cbsi ccaa ccab ccac ccad ccai ccas ccba ccbc ccca cccb cccc ccci cccs ccdc ccdi ccds ccic ccid ccii ccis ccob ccoc ccod ccsa ccsd ccsi ccss cdaa cdac cdad cdai cdba cdcs cdda cddb cdic cdii cdio cdis cdos cdss ciaa ciao cias ciba cibc cibi cibo cica cicc cici cico cics cida cidc cidi cids ciia ciid ciii ciis ciob cios cis- cisa cisc cisd ciss coad coai coas coba cobb cobi cobo cobs coca coco coda codd codi cods coia cois coob cood coos cosa cosc cosi coso coss csaa csab csac csao csas cscb cscc cscd csci csco cscs csda csdb csia csib csid csio csis csob csos cssa cssd d-bo daab daad daas daba dabb dabo dabs daca daci dacs dada dadi dado dads daia daid daio dais daos dasa dasb dasc dasd dasi dass dbas dbcc dbcs dbos dbsa dbss dcas dcbc dcca dccb dccc dcci dccs dcdb dcds dcia dcii dcio dcis dcos dcsc dcss dddd ddoc ddss dia- diab diac diad diao dias diba dibb dibo dibs dica dici dico dida didi dido dids diii diis dioc dios dis- disa disc disd disi diso diss doab doas doba dobb dobi dobs doca doci doco docs dod- doda dodd dodi dodo dods doid dois doob dood doos dosa dosi doso doss dsac dsba dsbc dscc dscs dsda dsoa dsos dssa dssc dssi iaaa iaac iaai iaas iaba iaca iacc iacs iadb iadc iaia iais iasa iasc iasi iaso ibac ibad ibas ibca ibcs ibdo ibia ibid ibis ibos ibsa ibss icaa icab icac icad icai icao icas icbc icbd icbs icca iccb iccc icci icco iccs icdc icdd icis icoc icod icos icsa icsb icsc icsd icsi icss idad idas idca idda iddo idia idic idid idio idis idoc idos idsa idsc idso idss iiac iias iica iicd iida iiii iiio iiis iioi iioo iios iisc iisd iisi ioba iobi ioci iod- ioda iodd iodo ioii ioio iooi iooo ioos ioso is-a isac isad isai isao isas isba isbd isca iscc iscd isci isco iscs isda isdb isdc isds isia isic isis iso- isoc isos issa issc issi isso isss oaic oais oasc oasi oass obad obai obas obba obbo obia obid obis oboi obos obsd obss ocab ocac ocad ocas ocbc occa occc occi ocds ocis ocos ocsa odac odai odas odbo odci odda oddd oddi odds odia odic odio odis odoo odos odso oiba oici oido oids oiii oios oisc oisd ooaa ooba oobi ooda oodi ooia ooid oooo ooos oosa oosi osai osas osba osca oscc osci osco osdi osia osii osis osoi osoo osos ossa ossb ossd ossi osso s-ib s-ic s-ii s-os sa-c saab saac saad saas saba sabb sabc sabi sabo sabs saca sacc sacd saci saco sacs sada sadb sadc sadd sadi sado sads saia saic said sais saoi saos sasa sasc sasd sasi saso sass sbaa sbac sbai sbas sbbs sbca sbcc sbcs sbds sbia sbic sbsa sbsd sbsi scaa scab scac scad scai scas scba scbi sccc sccs scda scdc scds sci- scia scic scid scio scis scob scoo scsa scsc scsd scsi scso sdba sdcc sdco sddc sdds sdib sdic sdio sdsc sdss siaa siab siac siai sias siba sibc sibi sibo sibs sica sicc sici sico sics sida sidd sidi sido sids siod sios sisa sisc sisd sisi siss soad soas soba sobo sobs soca soci soco socs soda sodd sodo sods soia soic sois sood soos sosa sosi soso soss ssaa ssab ssac ssao ssas ssca sscc ssci sscs ssdc ssdd ssid ssis ssoc sssa sssb sssc sssi ssss