a-do a-ii aaaa aaab aaac aaad aaai aaar aaba aabb aabc aabd aabi aaca aacb aacc aacd aaci aaco aacr aada aadc aadi aaib aaic aaii aaoo aara aarc aard aari aaro abaa abab abac abad abai abar abb- abba abbb abbi abbo abbr abca abcb abcc abcd abci abcr abda abdi abdo abia abib abic abid abir aboa abob abod aboo abor abra abrc abri abro acaa acab acac acad acai acar acba acca accc accd acci acco acda acdb acdc acdi aci- acia acic acid acir acoa acod acor acr- acra acrc acri acro acrr adaa adab adac adad adai adao adar adba adbc adbi adcc adci adda addc addd addi addo addr adia adib adic adio adir adob adoc adod adoo ador adra adro aiai aiba aibo aica aicc aicd aicr aida aidb aidc aidi aidr aiia aiib aiic aiid aiir aioc aioi aira aird airi airo aoba aoca aora aorb arab arac arad arai arar arba arbi arc- arca arci arco arda ardc ardi ardo aria arib arid arii ario aroa arob arod aroi aroo aror arr- arra arrc arri arro arrr ba-i baaa baad baar baba babb babi babo babr bac- baca bacc baci baco bada badb badd badi bado badr baia baib baic baid baio bair bar- bara barb barc bard bari baro barr bbad bbbb bbci bbdd bbdo bbrc bcaa bcar bcbc bcca bccc bcci bcda bcia bcor bcra bd-r bdbc bddc bdii biad biao biar biba bibb bibi bibo bica bicc bici bico bida bidi bido bidr bio- bioc bioi bira birb bird biri biro birr boab boac boad boai boar boba bobb bobi bobo boca boco boda bodb bodi bodo boi- boid boii boob booc bood boor bor- bora bord bori boro borr brab brac brad brai brao brca brcb brda brdo bria bric brid brio broa brob broc brod broo bror brrr c-bo c-cd caaa caab caac caba cabi cabo cac- caca cacc caci caco cacr cada cadc cadd cadi cado cadr caia caib caic caid caio cair caod caoi caor cara carb carc card cari caro carr cbac cbar cbbc cbca cbcc cbcr cbdb cbdc cbdi cbdo cbia cbid cbir cbrd ccaa ccab ccac ccad ccai ccar ccba ccbc ccca cccb cccc ccci ccdc ccdi ccdr ccic ccid ccii ccir ccob ccoc ccod ccra ccrc ccri cd-r cdaa cdac cdad cdai cdba cdda cddb cddr cdic cdii cdio ciaa ciao ciar ciba cibc cibi cibo cica cicc cici cico cicr cida cidc cidi cidr ciia ciid ciii ciob cior cira cirb circ ciri ciro cirr coad coai coba cobb cobi cobo coca coco coda codd codi coia coir coob cood cor- cora corb corc cord cori coro corr crab crac crai crar crbc crca crcc crcr crda crdc cria crib cric crob croc crod croo cror d-bo daab daad daar daba dabb dabo daca daci dada dadi dado daia daid daio dair dara darb darc dard dari daro darr dbar dbcc dcbc dcca dccb dccc dcci dcdb dcia dcii dcio dcra dddd ddoc ddrc dia- diab diac diad diao diar diba dibb dibo dica dici dico dida didi dido diii dioc dior dira dird dirr doab doar doba dobb dobi doca doci doco dod- doda dodd dodi dodo doid doob dood door dora dorc dord dori doro dorr draa drab drac drad drar drba drbc drca drda drib dric drob drod drra iaaa iaac iaai iaba iaca iacc iacr iadb iadc iaia iara iarc ibac ibad ibar ibca ibdo ibia ibid ibra ibrc ibrd ibri ibro icaa icab icac icad icai icao icar icbc icbd icca iccb iccc icci icco iccr icdc icdd icoc icod icor icra icrc icrr idad idar idca idcr idda iddo idia idic idid idio idir idoc idra idrc idro iiac iica iicd iida iiii iiio iioi iioo iira iirc ioba iobi ioci iod- ioda iodd iodo ioii ioio iooi iooo iora iori irac irad irai irao irar irca ircc ircd irda irdc irdo iri- iria iric irid irio irob iroc irod irra irrc irri oaic oara obad obai obba obbo obia obid oboi obor obra obri obro ocab ocac ocad ocbc occa occc occi ocra ocro ocrr odac odai odbo odci odda oddd oddi odia odic odio odir odoo odor odra oiba oici oido oiii oira ooaa ooba oobi oocr ooda oodi ooia ooid oooo oora oord orab orac orad orai orao orar orba orbb orbi orbo orca orci orco orda ordo ori- oria oric orid orio oro- oror orra orri orro raab raad raba rabb rabi rabo rac- raca racc raci raco rada radc radd rado radr raia raic raid raii rair raob raoc rara rarb rari raro rbbb rbbr rcac rcbc rcbo rccb rccc rcdc rcic rcid rcrd rdac rdio rdoc riaa riab riad riai rib- riba ribo rica ricc rico rida ridc ridd ridi rido riia riri roab road roar rob- roba robb robi robo roca rocc roco roda rodd rodi rodo roia roid roio roir roob rood rooi roor rora rorc rori roro rrad rrrr