bbbb bblb blno blob blom blon bloo bnml bnor bnrr bobb bobo boll bolm boln bolo bomb bonn bono boob bool boom boon boor bor- borm born boro borr brno brob brol brom bron broo bror brrm brrr lblr llll lloo lmbo lmln lmmr lmno lob- lobb lobo loll lolo lomb lomm lomo lono lonr loob lool loom loon loor lorn loro lron lrrr mlnr mmmm mmor mnbb mobb mobo moll moln molo molr momo mon- monn mono moob mool moon moor morb morl morn moro mrbb mrbm mrln mrml mron nbbo nlrb nmml nmon nnnn nobm nobo noll nolo nom- nomo non- nonn nono noo- noob nool noon nooo noor nor- norb norm norn noro norr nrlb nrml nron nrrl obbo obol obon obor obro olbo ollo olmo olom olon olor ombo omn- omo- omon omoo omor omro onno onon onor oolo oooo orbb orbo orlo ormn ormo orno oro- orom oron oror orro rbbb rbbr rlml rmll rmon rnbr rob- robb robo roll rolm rolo romb romm romo rono roob rool room roon roor roro rrrr