bbbb bnor bnrr bntm bobb bobo bomb bomt bonn bono bont boob boom boon boor boot bor- borm born boro borr bort botb botn boto bott brno brob brom bron broo bror brot brrm brrr btob btor btrt bttb mmmm mmor mnbb mntb mntn mobb mobo momo mon- monn mono mont moob moon moor moot morb morn moro mort motb motm moto mott mrbb mrbm mron mrtm mrtn mrtt mtbo mtnt mtom mtor mtrr mttr nbbo nmnt nmon nmtb nnmt nnnn nnot nntn nobm nobo nom- nomo non- nonn nono nont noo- noob noon nooo noor noot nor- norb norm norn noro norr nort not- noto nott nron nttm ntto nttr obbo obon obor obot obro ombo omn- omo- omon omoo omor omro onno onon onor ont- onto oont oooo oort ootb orbb orbo ormn ormo orno oro- orom oron oror orot orro orto oto- oton otoo otor otro otto rbbb rbbr rmon rnbr rnnt rnot rob- robb robo robt romb romm romo rono ront roob room roon roor root roro rort rotn roto rotr rott rrrr t-mo tbrb tmbr tmnt tmro tmtt tobo tobt tomb tomm tomo tomt tonb tonn tono toom toon toor toot torm torn toro torr tort totm toto totr tott trmb trno trom tron troo trot trtr ttbb tton tttt