-hou bbbb bblb bhor bhuj bhur bhuu blob blom bloo blou blub blum blur bobb bobo bobu bohl bohm boho bohr bohu bojo boju boll bolm bolo bolu bomb bomu boob booh bool boom boor bor- borh borj borm boro borr boru bouh boul boum bour brob broh brol brom broo bror brou brrm brrr bruh brum bubb bubo bubu buhl buho buhr bujo buju bulb bull bulu bum- bumb buol bur- burb burh burj burl burm buro burr buru hhhh hlul hmhb hmmm hobo hohl hohm hoho hojo hoju hol- holb holh holl holm holo holu hom- homo homr homu hool hoom hoor horl horo horr hour hrbl hrob hubb hubl hubo huhu hull hulu humh humm humo huor hurl huro hurr huru huub j-ro jbob jhol jhum jmml jmol jobo jobu johl joho jojo joll jolo jomo jool joom joor jorl joro joul jour jrbr jruh jubu juhl juho juhu juju jumo jumu jurm jurr juul lblr lhhh lhor llll lloo lmbo lmmr lob- lobb lobh lobo loho lohr lohu lojo loll lolo lomb lomm lomo lomu loob looj lool loom loor loro louh loul loum lour louu lrrr luhu luju lull lulu lumb lumo luoh mbhl mbou mhmm mhmr mhor mmhl mmhm mmjb mmmh mmmm mmor mobb mobo mohl mohm moho mohr mohu mojo moju moll molo molr momo momu moob mool moor morb morl moro moru moul mour mrbb mrbm mrml mubo muhr muhu mujo muju mull mulm mulo mulu mumm mumo mumu murl muro murr muru obbo oblu obol obor obrh obro obuh ohho ohob ohoh ohum olbo olhm olju ollo olmo olom olor olur ombo ombu omo- omoo omor omro omul omuo ooho oolo oooh oooo orbb orbo orbu orlo orlu ormo oro- orom oror orro orub oruj orum ouju oulu our- ouro ouu- rbbb rbbr rboh rhob rhoh rhoj rhum rlml rmjm rmll rob- robb robo robu rohl rohm rohr rohu rojo roll rolm rolo romb romm romo roob rool room roor roro roru roub rouh roul roum rrrr rrum rubb rubu ruhh ruhl ruhm ruhr rujm rull rulo rumb ruml rumm rumo ruro ruru ubbo ublo uhoh uhuh ujml ullo ullr ulmo ulmu ulo- ulul ulum umb- umbo ummo umol umor uoml uomo uor- urho uro- urol urom uroo urrh urum urur uulu uuuu