bbbb bbdd bbdo bbeb bd-r bdrm bebb bebe bebo bede bedo bedu beeb beed beem beer beme bemu beo- beod beor berd bere berm bero berr beru beur bmdb bobb bobe bobo bobu bodb bode bodo bodu boee boeo boer bomb bome bomu boob bood booe boom boor bor- bord bore borm boro borr boru boud boue boum bour brdm brdo breb bred bree brem breo brer brob brod broe brom broo bror brou brrm brrr brud brue brum bubb bube bubo bubu budb budd bude budo budu buem buer bueu bum- bumb bur- burb burd bure burm buro burr buru d-bo dddd ddre ddub debe debu dedd dede dedo dedu deeb deed deem deer dem- demb demd deme demo demu deor der- derb dere derm dero derr deue deum deur dmrb dobb dobe dobu dod- dodd dode dodo doer domb dome domm domo doob dood doom door dord dore dorm doro dorr doru doub doud doue doum dour dred dree drem drob drod drom drou drub drue drum druu dub- dubb dube dubu dudd dude dudo dudu duer dumb dume dumm duo- dure duro duru duur ebbo ebbr ebed eber eboe eboo ebor ebro ebru ebur edde eddm eddo ede- edem eder edme edod edom edou edrm edru edur eede eedu eeee eemo eero embd embe embo embr emer emeu emme emmu emod emor emre eode eore erbb erbe erde ereb ered erem erer erme ermo erob erod eroe eroo erre erro erub erum erur eude eudm euer eur- eure euro mbdb mbed mbou mddm mdme mdud mebe mebo medb medd mede medo medu meed meem meer meme memo memr memu meor meou mer- merb merd mere merm mero meru meum mmdb mmmd mmmm mmod mmor mobb mobe mobo modd mode modo modu moed mome momo momu moob mood mooe moor morb mord more moro moru moud moue mour mrbb mrbm mrdd mreb mred mree mrmd mrud mube mubo mudd mude mudu mued muee mume mumm mumo mumu murd mure muro murr muru o-eo obbo obed ober oboe obor obre obro odbo oddd oded odem odeo oder odmr odom odoo odor odou odum odur oedo oeme oere oerm ombe ombo ombu omdb omed omee omeo omer omo- omoe omoo omor omre omro omuo oobe ooer oome oooo oord oore orbb orbe orbo orbu orde ordo ordu ore- oreb ored orem oreo orer orme ormo oro- oroe orom oror orro orub orum oude oued ouer oume our- oure ouro ouu- rbbb rbbr rdbm rder rebb rebe rebo rebu redd rede redo redr redu reeb reed reem reme remo reod reou rerd rere rero reru reue reuu rob- robb robe robo robu rodd rode rodo roed roer romb romd rome romm romo roob rood room roor rore roro roru roub roud roue roum rred rrrr rrum rubb rube rubu rudd rude rudo rued ruer rumb rume rumm rumo rurd rure ruro ruru ruud ubbe ubbo uber ubod ubud udem uder udoo umb- umbe umbo umde umer ummo umoe umor uomo uor- uore urbe urde urdu ure- ured uro- urom uroo urre urum urur uuuu