a-be aaaa aaab aaae aaam aaar aaba aabb aabm aaea aaem aama aamb aame aamo aamr aaoe aaoo aara aare aarm aaro aaru abaa abab abae abam abar abau abb- abba abbb abbe abbo abbr abee aber abma abmb aboa abob aboo abor abou abra abro abua abue abum aeer aeom aer- aera aero amaa amae amam amar amb- amba ambe ambo ambr ambu amee amer ameu amm- amma amme ammo ammu amob amoo amor amou amra amro amua amum amur aoba aoeu aoma aora aorb arab arae aram arar arau arba arbe area aree arem areo areu arma arme armm armo armu aroa arob aroe arom aroo aror arr- arra arre arro arrr arru arua arub arue arum auaa aube auer auma aur- aura aure auro baaa baam baar baba babb babe babm babo babr babu baer bama bamb bame bamm bamu bar- bara barb bare barm baro barr baru bau- baum baur bbau bbbb bbeb beam bear beau beba bebb bebe bebo beeb beem beer bema beme bemu beo- beor bera bere berm bero berr beru beur bmaa boab boar boba bobb bobe bobo bobu boea boee boeo boer boma bomb bome bomu boob booe boom boor bor- bora bore borm boro borr boru boua boue boum bour brab brae bram brao brau brea breb bree brem breo brer broa brob broe brom broo bror brou brrm brrr brue brum buar buba bubb bube bubo bubu buea buem buer bueu bum- buma bumb bur- bura burb bure burm buro burr buru eaba eama eame eaom eara earb eare earo ebam ebba ebbo ebbr eber eboe eboo ebor ebro ebru ebur eeea eeee eemo eera eero emae emam emar emba embe embo embr emer emeu emma emme emmu emor emra emre eora eore eram erau erba erbb erbe ereb erem erer erma erme ermo erob eroe eroo erra erre erro erua erub erum erur euba euer eur- eura eure euro maaa maam maar maba mabe mabo mabu maee maem maeo maer mama mame mamo mamu maor mar- mara mare marm maro marr maru maua maum maur mbam mbba mbou mear mebe mebo meem meer mema meme memo memr memu meor meou mer- mera merb mere merm mero meru meum mmaa mmab mmar mmea mmmm mmor moaa moab moam moar moba mobb mobe mobo moea moma mome momo momu mooa moob mooe moor mora morb more moro moru moue mour mrbb mrbm mreb mree muar mube mubo muee muma mume mumm mumo mumu mura mure muro murr muru o-eo oaau oaer oama oara oare obba obbo obea ober oboe obor obra obre obro oeme oera oere oerm omam omao omar ombe ombo ombu omee omeo omer omma omo- omoa omoe omoo omor omra omre omro omuo ooaa ooba oobe ooer ooma oome oooo oora oore orab orae oram orao orar orba orbb orbe orbo orbu ore- orea oreb orem oreo orer orma orme ormo oro- oroe orom oror orra orro orub orum ouea ouer ouma oume our- oura oure ouro ouu- raab raam raba rabb rabe rabo rabu raer rama ramb rame ramm ramo ramu raob raom rara rarb rare raro raua raub raue raum rbbb rbbr rea- reae ream reao rear reau reba rebb rebe rebo rebu reeb reem rema reme remo reou rera rere rero reru reue reuu roab roam roar rob- roba robb robe robo robu roea roer roma romb rome romm romo roob room roor rora rore roro roru roua roub roue roum rrrr rrum ruba rubb rube rubu ruer ruma rumb rume rumm rumo rura rure ruro ruru uaru uaua ubar ubba ubbe ubbo uber ubra ueba umaa umar umb- umba umbe umbo umer umma ummo umoe umor umra uomo uor- uore urao urau urba urbe ure- urea urma uro- uroa urom uroo urra urre urum urur uuuu