-ing bbbb bbin bbng bgon bibb bibi bibo bigb bigg bign bigo bigt biin bin- bing bini binn bino bint bio- biog bioi bion biot bito bitt bivi bnib bnin bobb bobi bobo bogg bogi bogo bogt boi- boii boin boit bong boni bonn bono bont boob boog boon boot botb boti botn boto bott bovi bovo btob bttb btvi gbbo gbon ggbt gggg gibb gigg gigi gign gigo ging gini ginn gino giog gioi gion gito gnib gnin gnit gnoo gnti gntv gobi gobo gogi gogo goin goit gon- gong goni gonn gono goog gooi goon goot goti goto gott gotv govi govt gvtv gvvv i-go i-no ibon ibot ibtb igbo igni igno igon igoo igot iiii iiio iiit iino iioi iioo iitt inbo ingo inig init inni inno ino- inoi inon inot intg inti intn into invt iobi iogt ioii ioio ioit ioni ionn iono iooi iooo ioto itgo itin itno itoi iton itoo itto ivbv ivig ivin ivon n-ii n-tv nbbo nbti ngio ngon ngtn ngtv nibi nibo nigg nigo nigt niit ning nini nino niog nion nioo nitb niti nito nivo nngn nnit nnnn nnot nntn nnvt nobi nobo nogg nogo nogt noib noin noio noit non- nong noni nonn nono nont noo- noob noon nooo noot noov not- noti noto nott notv nov- novi novo ntto nttv ntvg nvtv obbo obin obit oboi obon obot obvi ogb oggi ogin ogni ogog ogoi ogon oigo oiii oint oion oiti ongi ongo onit onni onno onon ont- onti onto ontv oobi oont oooo ootb otin otit oto- otog oton otoo otov otti otto ovi- ovni ovo- ovon ovoo ovot tbit tbvi tibi tigi tiit ting tini tinn tino tint tion titi tito titt tivi tivo tobi tobo tobt togo togt toit tonb tong toni tonn tono toon toot toti toto tott tovo ttbb tton tttt tvbn tvnb tvni tvon tvtv vigo viii ving vini vino vint vion vitg viti vito vitt vivi vivo vnbg vnto vogt voin voio voit voni vonn vont voog voot voto vt-i vvob vvog vvvv