bbbb bbgm bblb bbmg bbrg blob blog blom bloo blou blrg blub blum blur bobb bobo bobu bogg bogo bolg boll bolm bolo bolu bomb bomu boob boog bool boom boor bor- borg borm boro borr boru boul boum bour brob brog brol brom broo bror brou brrm brrr brug brum bubb bubo bubu bugg bugo bulb bulg bull bulu bum- bumb buol bur- burb burg burl burm buro burr buru gbbo gggg glob glog glom glor glou glrb glro glub glug glum glur gmml gmmr gobl gobo gogo goll golm golo golu gomb gomo gomu goog gool goom goor gorb gorg gorm goro gorr gou- goug goul goum gour grbr grml grob grog grol grom groo gror grou grrl grrr grub grug grum grur gubb gubu gugb gugg gugu gulb gull gulo gulu gumb gumm gumo gurb gurg gurl guro gurr guru lblr lbug lgbu llll lloo lmbo lmmr lob- lobb lobo log- logb logo loll lolo lomb lomm lomo lomu loob lool loom loor loro loul loum lour louu lrgb lrrr lugg lugo lugu lull lulu lumb lumo lurg mbou mgrm mmmm mmor mobb mobo mogg mogo mogu moll molo molr momo momu moob moog mool moor morb morg morl moro moru moul mour mrbb mrbm mrml mubo mugg mugo mugu mull mulm mulo mulu mumm mumo mumu murg murl muro murr muru obbo oblu obol obor obro ogb ogml ogog ogou ogro ogum olbo olgr ollo olmo olog olom olor olur ombo ombu omo- omoo omor omro omul omuo oolo oooo orbb orbo orbu orgo orlo orlu ormo oro- orom oror orro orub orum oulu our- ouro ouu- rbbb rbbr rlml rlug rmll rmrg rob- robb robo robu rogg rogo roll rolm rolo romb romm romo roob roog rool room roor roro roru roub roul roum rrrr rrum rubb rubu rugg rull rulo rumb ruml rumm rumo ruro ruru ubbo ublo uggo ugol ugro ugur uguu ullo ullr ulmo ulmu ulo- ulog ulul ulum umb- umbo umgo ummg ummo umol umor uoml uomo uor- urgu uro- urol urom uroo urum urur uulu uuuu