bbbb bntm bobb bobo bomb bomt bonn bono bont boob boom boon boot booz botb botn boto bott bozo btob bttb bzzt bzzz mmmm mnbb mntb mntn mobb mobo momo mon- monn mono mont moob moon moot motb motm moto mott motz mozo mtbo mtnt mtom nbbo nmnt nmon nmtb nnmt nnnn nnot nntn nobm nobo nom- nomo non- nonn nono nont noo- noob noon nooo noot not- noto nott ntoz nttm ntto nzmt obbo obon obot ombo omn- omo- omon omoo onno onon onoz ont- onto onzo oont oooo ootb oto- oton otoo otto ozon t-mo tmnt tmtt tobo tobt tomb tomm tomo tomt tonb tonn tono toom toon toot totm toto tott tozo ttbb tton tttt tzzt zobo zomb zomo zon- zoo- zoom zoon zoot zott zotz zozo zzzz