bbbb bibb bibi bibo biji biju bimo bio- bioi biou birb biri biro birr biru bmir bmmi bobb bobi bobo bobu boi- boii boim boiu boji bojo boju bomb bomi bomu boob boom boor bor- bori borj borm boro borr boru boum bour brim brio brob brom broo bror brou brrm brrr brum bubb bubi bubo bubu buir buiu buji bujo buju bum- bumb bur- burb buri burj burm buro burr buru ibbm ibim ibri ibro iiii iiio iioi iioo iium ijji ijui imbi imir immi immo imou imri imro imrr iobi ioii ioio iomo iooi iooo iori irbm iri- irio irmo irob irri iuiu j-ro jbob jibb jibi jiji jiju jimi jimm jimo jiri jiro jiru jjim jmir jobo jobu joio joji jojo jomi jomo joom joor joro jour jrbr jubu juju jumo jumu juri jurm jurr mbim mbio mbou miii miio miji mijo miju mim- mimi mimo mio- miri miro mirr miru miui mmii mmjb mmmm mmor mobb mobi mobo moii moio moir moji mojo moju momi momo momu moob moor morb mori moro moru mour mrbb mrbm mubi mubo muir muji mujo muju mumm mumo mumu muri muro murr muru obbo oboi obor obri obro oiii oimb oium ombo ombu omim omio omo- omoi omoo omor omri omro omuo oobi ooij ooji oooo orbb orbi orbo orbu ori- orio orji ormo oro- orom oror orri orro orub oruj orum ouii ouir ouju oumi our- ouro ouu- rbbb rbbr rib- ribo ribu riji rijo rimi rimm rimo rimu riom riou riri rmjm rob- robb robi robo robu roio roir roiu roji rojo romb romi romm romo roob rooi room roor rori roro roru roub roum rrrr rrum rubb rubi rubu rujm rumb rumi rumm rumo ruri ruro ruru ubbi ubbo ubii ubir uirr umb- umbi umbo ummo umor umri uomo uor- urbi urib urim uriu urmi uro- urom uroo urri urum urur uuri uuuu