bbbb bhor bhot bhrt bnor bnrr bobb bobo bohn boho bohr boht bonn bono bont boob booh boon boor boot bor- borh born boro borr bort botb both botn boto bott brno brob broh bron broo bror brot brrr btob btor btrt bttb hhhh hntb hntr hobo hohn hoho hono hont hoon hoor hoot horn horo horr hort hotb hoth hoto hotr hott hrob hron hrtb htoh httr nbbo nhnn nhon nnnn nnot nntn nobo nohn noho noht non- nonn nono nont noo- noob noon nooo noor noot nor- norb norn noro norr nort not- noth noto nott nron nthn ntht ntto nttr obbo obon obor obot obrh obro ohho ohno ohob ohoh ohrn ohto onno onon onor ont- onto ooho oont oooh oooo oort ootb orbb orbo orno oro- oron oror orot orro orth orto otho othr oto- otoh oton otoo otor otro otto rbbb rbbr rboh rhob rhoh rhon rnbr rnnt rnot rob- robb robo robt rohn rohr rono ront roob roon roor root roro rort roth rotn roto rotr rott rrrr tbrb thnt thon thoo thor thot thro thtb thtr tobo tobt toho tonb tonh tonn tono tooh toon toor toot torn toro torr tort toth toto totr tott trno tron troo trot trtr ttbb tton tttt