a-do a-ii aaaa aaab aaad aaai aaar aaba aabb aabd aabi aada aadi aaib aaii aaoo aara aard aari aaro abaa abab abad abai abar abb- abba abbb abbi abbo abbr abda abdi abdo abia abib abid abir aboa abob abod aboo abor abra abri abro adaa adab adad adai adao adar adba adbi adda addd addi addo addr adia adib adio adir adob adod adoo ador adra adro aiai aiba aibo aida aidb aidi aidr aiia aiib aiid aiir aioi aira aird airi airo aoba aora aorb arab arad arai arar arba arbi arda ardi ardo aria arib arid arii ario aroa arob arod aroi aroo aror arr- arra arri arro arrr ba-i baaa baad baar baba babb babi babo babr bada badb badd badi bado badr baia baib baid baio bair bar- bara barb bard bari baro barr bbad bbbb bbdd bbdo bd-r bdii biad biao biar biba bibb bibi bibo bida bidi bido bidr bio- bioi bira birb bird biri biro birr boab boad boai boar boba bobb bobi bobo boda bodb bodi bodo boi- boid boii boob bood boor bor- bora bord bori boro borr brab brad brai brao brda brdo bria brid brio broa brob brod broo bror brrr d-bo daab daad daar daba dabb dabo dada dadi dado daia daid daio dair dara darb dard dari daro darr dbar dddd dia- diab diad diao diar diba dibb dibo dida didi dido diii dior dira dird dirr doab doar doba dobb dobi dod- doda dodd dodi dodo doid doob dood door dora dord dori doro dorr draa drab drad drar drba drda drib drob drod drra iaaa iaai iaba iadb iaia iara ibad ibar ibdo ibia ibid ibra ibrd ibri ibro idad idar idda iddo idia idid idio idir idra idro iida iiii iiio iioi iioo iira ioba iobi iod- ioda iodd iodo ioii ioio iooi iooo iora iori irad irai irao irar irda irdo iri- iria irid irio irob irod irra irri oara obad obai obba obbo obia obid oboi obor obra obri obro odai odbo odda oddd oddi odia odio odir odoo odor odra oiba oido oiii oira ooaa ooba oobi ooda oodi ooia ooid oooo oora oord orab orad orai orao orar orba orbb orbi orbo orda ordo ori- oria orid orio oro- oror orra orri orro raab raad raba rabb rabi rabo rada radd rado radr raia raid raii rair raob rara rarb rari raro rbbb rbbr rdio riaa riab riad riai rib- riba ribo rida ridd ridi rido riia riri roab road roar rob- roba robb robi robo roda rodd rodi rodo roia roid roio roir roob rood rooi roor rora rori roro rrad rrrr