a-be aaaa aaab aaae aaal aaar aaba aabb aabl aaea aala aale aall aalo aaoe aaoo aara aare aaro abaa abab abae abal abar abb- abba abbb abbe abbo abbr abee abel aber abla able ablo aboa abob abol aboo abor abra abro aeer aela aer- aera aero alaa alae alal alao alar alb- alba albe albo alea alee aleo aler all- alla alle alll allo allr aloa aloe alol aloo alor alro aoba aola aole aora aorb arab arae aral arar arba arbe area aree arel areo arla arle arlo aroa arob aroe aroo aror arr- arra arre arro arrr baaa baal baar baba babb babe babo babr bael baer bala bale ball balo baol bar- bara barb bare baro barr bbbb bbeb bblb beal bear beba bebb bebe bebo beeb beel beer bela bele bell belo beo- beor bera bere bero berr blaa blab blae blea bleb blee bleo blob bloo boab boal boar boba bobb bobe bobo boea boee boel boeo boer bola bole boll bolo boob booe bool boor bor- bora bore boro borr brab brae brao brea breb bree brel breo brer broa brob broe brol broo bror brrr e-la eaba eala eale eara earb eare earl earo ebal ebba ebbo ebbr ebel eber ebla eboe ebol eboo ebor ebro eeea eeee eele eera eero el-b elab elal elar elba elbe elbo elea elee eleo eler ella elle ello elra elro eola eole eolo eora eore eorl eral erba erbb erbe ereb erel erer erla erle erll erob eroe erol eroo erra erre erro laaa laal laar laba labe labo labr lael laer lala lale lall lalo lara larb lare larr lbar lblr leaa leal leao lear leba lebo leea leel leer lela lele lell lelo leor lera lere lero llao llll lloa lloo loar lob- loba lobb lobe lobo loeb lola lole loll lolo loob looe lool loor lora lore loro lral lrba lrrr o-eo oaer oall oara oare obal obba obbo obea obel ober obla oble oboe obol obor obra obre obro oela oele oera oere olar olba olbo ole- olea oleo oler olla olle ollo olor ooaa ooba oobe ooer oola oolo oooo oora oore orab orae oral orao orar orba orbb orbe orbo ore- orea oreb orel oreo orer orla orle orlo oro- oroe oror orra orro raab raba rabb rabe rabl rabo rael raer rala ralb rale rall ralo raob raol rara rarb rare raro rbbb rbbr rble rea- reae real reao rear reba rebb rebe rebo reeb reel rela relb rele rell relo reol rera rere rero rlab rlee roab roar rob- roba robb robe robo roea roel roer rola role roll rolo roob rool roor rora rore roro rrle rrrr