bbbb bbin bibb bibi bibo biin bimo bin- bini binn bino binu bio- bioi bion biou birb biri birn biro birr biru bmir bmmi bnib bnim bnin bnor bnrr bobb bobi bobo bobu boi- boii boim boin boiu bomb bomi bomu boni bonn bono bonu boob boom boon boor bor- bori borm born boro borr boru boum boun bour brim brin brio brno brob brom bron broo bror brou brrm brrr brum brun bubb bubi bubo bubu buin buir buiu bum- bumb bunb buni bunn buno bunu buon bur- burb buri burm burn buro burr buru i-no ibbm ibim ibon ibri ibro iiii iiio iinm iino iioi iioo iium imbi imin imir immi immo imno imon imou imri imro imrr imun inbo inni inno innr innu ino- inoi inon inor inou inri inro inui inun iobi ioii ioio iomo ioni ionn iono iooi iooo iori ioun irbm iri- irin irio irmo irob iron irri irun iuiu iuno mbim mbio mbou miii miin miio mim- mimi mimo mini minn mino minu mio- mion miri miro mirr miru miui mmii mmmm mmor mmun mnbb mnin mobb mobi mobo moii moin moio moir momi momo momu mon- moni monn mono monu moob moon moor morb mori morn moro moru moun mour mrbb mrbm mron mubi mubo muin muir mumm mumo mumu muni munn muno munu muon muri murn muro murr muru n-ii nbbo nibi nibm nibo niir niiu nimb nimi nimo nimr nimu nini nino nion nioo niou niro niru niur nmon nmri nnnn nobi nobm nobo nobu noib noin noio noir nom- nomi nomo nomu non- noni nonn nono nonu noo- noob noon nooo noor nor- norb nori norm norn noro norr noun nour nron nubi nuim nuin numb numi numm numu nunn nuno nuon nuri nurn nurr nuru obbo obin oboi obon obor obri obro oiii oimb oion oium ombo ombu omim omin omio omn- omni omo- omoi omon omoo omor omri omro omuo onir onni onno onon onor onur oobi oooo orbb orbi orbo orbu ori- orin orio ormn ormo orni orno oro- orom oron oror orri orro orub orum ouii ouin ouir oumi oun- our- ourn ouro ouu- rbbb rbbr rib- ribo ribu riin rimi rimm rimo rimu rinn rino riom rion riou riri rmon rnbr rnin rob- robb robi robo robu roin roio roir roiu romb romi romm romo roni rono roob rooi room roon roor rori roro roru roub roum roun rrrr rrum rrun rubb rubi rubu ruin rumb rumi rumm rumo runi runn runo ruri ruro ruru ruun ubbi ubbo ubii ubir ubon uirr umb- umbi umbo ummo umno umor umri uni- unii unin unio unir unmr unni unno unon unro unum uomo uor- urbi urib urim urin uriu urmi urni uro- urom uroo urri urum urun urur uuni uuno uuri uuuu