aaaa aaab aaam aaap aaar aaba aabb aabm aabp aama aamb aamo aamp aamr aaoo aapa aapm aapo aara aarm aaro aarp abaa abab abam abap abar abb- abba abbb abbo abbr abma abmb aboa abob aboo abor abpa abpm abpp abpr abra abro amaa amam amap amar amb- amba ambo ambr amm- amma ammo amob amoo amor ampa ampm ampo amra amro aoba aoma aopo aora aorb apam apao apap apar apba apbr apma apo- apom apoo apop apor appa appr apra apro arab aram arap arar arba arma armm armo aroa arob arom aroo aror arpa arr- arra arro arrr baaa baam baar baba babb babm babo babr bama bamb bamm bamp bapa bapp bar- bara barb barm baro barr bbbb bbpr bmaa bmop boab boar boba bobb bobo boma bomb bomp boob boom boop boor bopa bopp bor- bora borm boro borr brab bram brao broa brob brom broo bror brrm brrr maaa maam maap maar maba mabo mama mamo mamp maor mapa mapo mapp mapr mar- mara marm maro marr mbam mbba mmaa mmab mmap mmar mmmm mmor mmpa mmpr mmrp moaa moab moam moap moar moba mobb mobo moma momo mooa moob moop moor mopa mopp mora morb moro mpaa mpao mppp mpro mprp mrap mrbb mrbm mrpa oama oamp oara obba obbo obor obra obro omam omao omap omar ombo omma omo- omoa omoo omor ompa omra omro ooaa ooba ooma oooo oora opap opar opo- opor oppa oppo opra orab oram orao orar orba orbb orbo orma ormo oro- orom oror orra orro paap paar paba pam- pama pamb pamm pamo pamp papa papb papp papr par- para parm paro parp parr pbar pbmr pbpa pmaa pmbr pmma pmmp pmpm pmpo poar poba pobo poma pomo pomp poop poor pop- popa popo popp pora porb poro porr ppap ppar ppoa pppa pppo pppp pprm pram prao prar pro- proa prob prom proo prop prrm raab raam raba rabb rabo rama ramb ramm ramo ramp raob raom raop rapa rapm rapp rara rarb raro rbbb rbbr rmrp roab roam roap roar rob- roba robb robo roma romb romm romo romp roob room roop roor ropa ropo rora roro rpob rrmp rrrr