-ing bbbb bbin bbng bbrg bgon bibb bibi bibo 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 bogg bogi bogo bogt boi- boii boin boit bong boni bonn bono bont boob boog boon boor boot bor- 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 gbbo gbon ggbt gggg ggrn gibb gigg gigi gign gigo ging gini ginn gino giog gioi gion girg giri girn giro girr girt gito gnib gnin gnit gnoo gnrr gnti gobi gobo gogi gogo goin goit gon- gong goni gonn gono goog gooi goon goor goot gorb gorg gori gorn goro gorr gort goti goto gott grbr grib grig grin grit grni grob grog groi gron groo gror grot grrr gtbr i-go i-no ibon ibot ibri ibro ibtb igbo igni igno igon igoo igor igot igri iiii iiio iiit iino iioi iioo iitr iitt inbo 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 iooi iooo iorg iori ioto iri- irig irin irio irob iron irri irti itgo itin itno itoi iton itoo itor itri itto n-ii nbbo nbti ngio ngon ngor ngri ngtn nibi nibo nigg nigo nigt niir niit ning nini nino niog nion nioo niro nirt nitb niti nito nitr nngn nnit nnnn nnot nntn nobi nobo nogg nogo nogt noib noin noio noir noit non- nong noni nonn nono nont noo- noob noon nooo noor noot nor- norb norg nori norn noro norr nort not- noti noto nott nron ntto nttr obbo obin obit oboi obon obor obot obri obro ogb 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 oont oooo oort ootb orbb orbi orbo orgn orgo ori- orig orin orio orit orni orno oro- oron oror orot orri orro orto otin otit oto- otog oton otoo otor otro otti otto rbbb rbbr rgbi rgit rgtr rib- ribo rigg rigi rigo riin ring rinn rino rion riot riri riti rito ritt rnbr rnin rnnt rnot rob- robb robi robo robt rogg rogi rogo roig roin roio roir roit rong roni rono ront roob roog rooi roon roor root rori roro rort rotg roti rotn roto rotr rott rrrr tbit tbrb tibi tigi tigr tiit ting tini tinn tino tint tion tirb tiri tiro tirr titi tito titt tobi tobo tobt togo togr togt toit tonb tong toni tonn tono toon toor toot torg tori torn toro torr tort toti toto totr tott tri- trib trig trin trio trit trng trno trog troi tron troo trot trtr ttbb tton tttt