-ing bbbb bbfn bbin bbng bbrg bfgf bftt bgon bibb bibi bibo biff bifi bigb bigg bign bigo bigt biin bin- bing bini binn bino bint bio- biog bioi bion biot birb birg biri birn biro birr birt bito bitt bnib bnin bnor bnrr bobb bobi bobo boff bogg bogi bogo bogt boi- boii boin boit bong boni bonn bono bont boob boof boog boon boor boot bor- borf borg bori born boro borr bort botb boti botn boto bott brig brin brio brit brno brob brog bron broo bror brot brrr btob btor btrt bttb ffff ffii ffrr fftf fiff fifi fifo fift figg figo fiii fing fini finn fino fint fion fior firn fiti fitt fntb fobt fofo fogg fogi fogn fogo foin fong fono font foof foon foot for- forb forg fori forn foro forr fort foti foto fott frib frig frin frio frit frob frog fron frot ftii gbbo gbon gfor ggbt ggfg gggg ggrn gibb giff gift gigg gigi gign gigo ging gini ginn gino giog gioi gion girg giri girn giro girr girt gito gnib gnin gnit gnof gnoo gnrr gnti gobi gobo goff gofr gogi gogo goif goin goit gon- gong goni gonn gono goof goog gooi goon goor goot gorb gorf gorg gori gorn goro gorr gort goti goto gott grbr grib grif grig grin grit grni grob grof grog groi gron groo gror grot grrr gtbr gtfo i-go i-no ibfi ibon ibot ibri ibro ibtb ifbb ifit ifni ifno ifnr ifor ifrb ifrf ifri iftn ifto igbo igni igno igon igoo igor igot igri iiii iiio iiit iino iioi iioo iitr iitt inbo infi info ingo inig init inni inno innr ino- inoi inon inor inot inri inro intg inti intn into intr iobi iogt ioii ioio ioit ioni ionn iono ioof iooi iooo iorg iori iotf ioto iri- irig irin irio irob iron irri irtf irti itgo itif itin itno itof itoi iton itoo itor itrf itri ittf itto n-ii nbbo nbti nfff nfib nfon nfto ngio ngon ngor ngri ngtn nibi nibo niff nift nigg nigo nigt niir niit ning nini nino niog nion nioo niro nirt nitb nitf niti nito nitr nngn nnit nnnn nnot nntn nobi nobo nofi nogg nogo nogt noib noif noin noio noir noit non- nong noni nonn nono nont noo- noob noon nooo noor noot nor- norb norf norg nori norn noro norr nort not- noti noto nott nron ntof ntto nttr obbo obin obit oboi obon obor obot obri obro off- offo offr ofgo ofit ofno ofor ogb ogfr oggi ogin ogni ogog ogoi ogon ogri ogro oigo oiii oint oion oirt oiti ongi ongo onir onit onni onno onon onor ont- onti onto oobi ooff oont oooo oort ootb orbb orbi orbo orff orfi orgn orgo ori- orif orig orin orio orit orni orno oro- orof oron oror orot orri orro orto otif otin otit oto- otof otog oton otoo otor otro otti otto rbbb rbbr rgbi rgit rgtr rib- ribo riff rift rigg rigi rigo riif riin rinf ring rinn rino rion riot riri riti rito ritt rnbr rnin rnnt rnot rob- robb robi robo robt roff rofo rogg rogi rogo roif roig roin roio roir roit rong roni rono ront roob roof roog rooi roon roor root rori roro rort rotg roti rotn roto rotr rott rrif rrrr rtbf rtfb tbit tbnf tbrb tfin tfot tgif tibi tiff tifo tift tigi tigr tiit ting tini tinn tino tint tion tirb tiri tiro tirr titi tito titt tobi tobo tobt toff tofi tofo toft togo togr togt toit tonb tong toni tonn tono toof toon toor toot torf torg tori torn toro torr tort toti toto totr tott trfr tri- trib trif trig trin trio trit trng trno trog troi tron troo trot trtr ttbb ttff ttfn tton tttt