a-do aaaa aaab aaad aaam aaar aaav aaba aabb aabd aabm aada aama aamb aamd aamo aamr aaoo aara aard aarm aaro aava abaa abab abad abam abar abb- abba abbb abbo abbr abda abdo abma abmb aboa abob abod aboo abor abov abra abro abva abvd adaa adab adad adam adao adar adba adda addd addo addr adma admb admr adob adod adoo ador adra adro advb amaa amad amam amar amb- amba ambo ambr amda amdo amm- amma ammo amob amod amoo amor amra amro aoba aoma aora aorb arab arad aram arar arba arda ardm ardo arma armd armm armo aroa arob arod arom aroo aror arr- arra arro arrr arva arvo avab avao avar avda avma avor avra avro avva avvo baaa baad baam baar baba babb babm babo babr bada badb badd bado badr bama bamb bamm bar- bara barb bard barm baro barr bava bbad bbbb bbdd bbdo bd-r bdav bdrm bmaa bmdb boab boad boar boba bobb bobo boda bodb bodo boma bomb boob bood boom boor bor- bora bord borm boro borr bova bovo brab brad bram brao brav brda brdm brdo broa brob brod brom broo bror brrm brrr brvm d-bo daab daad daam daar daba dabb dabo dada dado dama damb damm damo dara darb dard daro darr dava dbar dddd dmaa dmab dmba dmrb doab doar doba dobb dod- doda dodd dodo doma domb domm domo doob dood doom door dora dord dorm doro dorr draa drab drad dram drar drba drda drob drod drom drra dvar dvda dvdr dvoa dvor dvra maaa maad maam maar maba mabo mada madb madd mado mama mamo maor mar- mara mard marm maro marr marv mava mavo mbam mbav mbba mbda mbdb mddm mdma mdra mmaa mmab mmar mmda mmdb mmdv mmmd mmmm mmod mmor moaa moab moam moar moba mobb mobo moda modd modo moma momo mooa moob mood moor moov mora morb mord moro mova mrad mrbb mrbm mrda mrdd mrmd oadm oama oara obad obba obbo obor obra obro odam odbo odda oddd odma odmr odom odoo odor odra odva omam omao omar ombo omda omdb omma omo- omoa omoo omor omov omra omro ooaa ooba ooda ooma oooo oora oord orab orad oram orao orar orav orba orbb orbo orda ordo orma ormo oro- orom oror orra orro orvr ovar ovda ovo- ovod ovoo ovra raab raad raam raba rabb rabo rada radd radm rado radr rama ramb ramm ramo raob raom rara rarb raro rava rbbb rbbr rdbm rdma rmmv rmvb roab road roam roar rob- roba robb robo roda rodd rodo roma romb romd romm romo roob rood room roor rora roro rova rovo rrad rrrr vaad vaar vada vado vama vamo vara vard varm varr vava vdma voad voar voda vodo voom voor vor- vora vord vorm voro vram vrav vrba vvob vvvv