-ing bbbb bbin bbng bbox bbrg bgon bibb bibi bibo bigb bigg bign bigo biin bin- bing bini binn bino bio- biog bioi bion biox birb birg biri birn biro birr birx bixi bnib bnin bnor bnrr bobb bobi bobo bogg bogi bogo boi- boii boin bong boni bonn bono boob boog boon boor boox bor- borg bori born boro borr brig brin brio brix brno brob brog bron broo bror brox brrr gbbo gbon gggg ggrn gibb gigg gigi gign gigo ging gini ginn gino giog gioi gion girg giri girn giro girr gnib gnin gnoo gnrr gobi gobo gogi gogo goin gon- gong goni gonn gono goog gooi goon goor gorb gorg gori gorn goro gorr grbr grib grig grin grni grob grog groi gron groo gror grrr i-go i-no ibon ibox ibri ibro igbo igni igno igon igoo igor igri iiii iiio iino iioi iioo inbo ingo inig inni inno innr ino- inoi inon inor inox inri inro iobi ioii ioio ioni ionn iono iooi iooo iorg iori iri- irig irin irio irix irob iron irri ixxi n-ii nbbo ngio ngon ngor ngri nibi nibo nigg nigo niir ning nini nino niog nion nioo niro nixi nngn nnnn nobi nobo nogg nogo noib noin noio noir noix non- nong noni nonn nono nonx noo- noob noon nooo noor nor- norb norg nori norn noro norr nron obbo obin obix oboi obon obor obox obri obro ogb oggi ogin ogni ogog ogoi ogon ogri ogro oigo oiii oion ongi ongo onir onix onni onno onon onor oobi oooo orbb orbi orbo orgn orgo ori- orig orin orio orix orni orno oro- oron oror orri orro oxi- oxo- oxon oxox oxxo rbbb rbbr rgbi rib- ribo rigg rigi rigo riin ring rinn rino rion riri rixo rnbr rnin rob- robb robi robo rogg rogi rogo roig roin roio roir rong roni rono roob roog rooi roon roor roox rori roro roxo rrrr xbin xbox xggi xibo xiii xing xion xixi xong xorg xorn xoro xoxo xxii xxix xxxi xxxo xxxx