bbbb bbin bibb bibi bibo biin bin- bini binn bino bint binz bio- bioi bion biot birb biri birn biro birr birt bito bitt bitz bizz bnib bnin bnor bnrr bobb bobi bobo boi- boii boin boit boni bonn bono bont boob boon boor boot booz bor- bori born boro borr bort borz botb boti botn boto bott bozi bozo brin brio brit briz brno brob bron broo bror brot broz brrr btob btor btrt bttb bzzt bzzz i-no ibon ibot ibri ibro ibtb iiii iiio iiit iino iioi iioo iitr iitt inbo init inni inno innr ino- inoi inon inor inot inoz inri inro inti intn into intr iobi ioii ioio ioit ioni ionn iono iooi iooo iori ioto iri- irin irio irob iron irri irti itin itno itoi iton itoo itor itri itto izon izzo n-ii nbbo nbti nibi nibo niir niit nini nino nion nioo niro nirt nitb niti nito nitr nitz nnit nnnn nnot nntn nobi nobo noib noin noio noir noit non- noni nonn nono nont noo- noob noon nooo noor noot nor- norb nori norn noro norr nort not- noti noto nott nozi nron ntoz ntto nttr nzrb obbo obin obit oboi obon obor obot obri obro oiii oint oion oirt oiti oitz onir onit onni onno onon onor onoz ont- onti onto onzo oobi oont oooo oort ootb oozi orbb orbi orbo ori- orin orio orit orni orno oro- oron oror orot oroz orri orro orto orzo otin otit oto- oton otoo otor otro otti otto otzi ozon rbbb rbbr rib- ribo riin rinn rino rion riot rioz riri riti rito ritt ritz rizi rizz rnbr rnin rnnt rnot rob- robb robi robo robt roin roio roir roit roiz roni rono ront roob rooi roon roor root rooz rori roro rort roti rotn roto rotr rott rozi rozz rrrr tbit tbrb tibi tiit tini tinn tino tint tion tirb tiri tiro tirr titi tito titt titz tizi tizz tobi tobo tobt toit tonb toni tonn tono toon toor toot tori torn toro torr tort toti toto totr tott tozo tri- trib trin trio trit triz trno troi tron troo trot trtr ttbb tton tttt tzzt z-ro zibo zinn zino zion ziri ziro ziti zito zizi zizz zobo zoio zon- zoni zoo- zoon zoot zorb zori zorn zoro zort zoti zott zotz zozo zrin zzzz