-ana a-do aaaa aaab aaad aaan aaar aaav aaba aabb aabd aada aana aand aaon aaoo aara aard aaro aava abaa abab abad aban abar abb- abba abbb abbo abbr abda abdo aboa abob abod abon aboo abor abov abra abro abva abvd adaa adab adad adan adao adar adba adda addd addn addo addr adna adob adod adon adoo ador adra adro advb ana- anaa anab anad anan anao anar anba anbb anbo and- anda ando andr anna annb anno ano- anoa anod anon anor aoba aonb aono aora aorb aorn arab arad aran arar arba arda ardo arna arnd arno aroa arob arod aron aroo aror arr- arra arro arrr arva arvn arvo avab avan avao avar avda avon avor avra avro avva avvo baaa baad baan baar baba babb babo babr bada badb badd bado badr bana band bann bano banr baon bar- bara barb bard barn baro barr bava bbad bbbb bbdd bbdo bd-r bdav bdna bnor bnrr boab boad boan boar boba bobb bobo boda bodb bodo bona bond bonn bono boob bood boon boor bor- bora bord born boro borr bova bovo brab brad bran brao brav brda brdo brna brno broa brob brod bron broo bror brrr d-bo d-na daab daad daan daar daba dabb dabo dada dado dana dand dann dano danr daon dara darb dard darn daro darr dava dbar dbrn dddd dnaa dnab dnad dnan doab doan doar doba dobb dod- doda dodd dodo dona dond donn dono donr doob dood doon door dora dord dorn doro dorr draa drab drad drar drba drda drna drno drob drod dron drra drvn dvar dvda dvdr dvno dvoa dvor dvra naaa naab naad naan naar naba nabo nada nadr nan- nana nanb nand nann nano naor nara nard narn naro narr nava navo navr navv nbaa nbad nbar nbbo ndaa ndao nddb nddo ndna ndor nndb nnnn noaa noba nobo noda nodo non- nona nonn nono noo- noob noon nooo noor noov nor- nora norb nord norn noro norr norv nov- nova novo nrab nrna nron nrrd nvda oara obad oban obba obbo obon obor obra obro odbo odda oddd odnb odon odoo odor odra odva onab onan onar onda ondo onna onno onod onon onor onra ooaa ooba ooda oona oooo oora oord orab orad oran orao orar orav orba orbb orbo orda ordn ordo orna orno oro- oron oror orra orro orvr ovan ovar ovda ovo- ovod ovon ovoo ovra raab raad raan raba rabb rabo rada radd rado radr rana rand rann rano raob rara rarb raro rava rbbb rbbr rdna rnbr rnod roab road roan roar rob- roba robb robo roda rodd rodo rona rond rono roob rood roon roor rora roro rova rovo rrad rrna rrrr vaad vaan vaar vada vado vana vand vann vano vara vard varn varr vava vnav voad voar voda vodo vona vond vonn voor vor- vora vord voro vran vrav vrba vrnn vron vvob vvvv