-ing bbbb bbfn bbin bbng bbrg bfgf bgon bibb bibi bibo biff bifi bigb bigg bign bigo biin bin- bing bini binn bino bio- biog bioi bion birb birg biri birn biro birr bnib bnin bnor bnrr bobb bobi bobo boff bogg bogi bogo boi- boii boin bong boni bonn bono boob boof boog boon boor bor- borf borg bori born boro borr brig brin brio brno brob brog bron broo bror brrr ffff ffii ffrr fiff fifi fifo figg figo fiii fing fini finn fino fion fior firn fofo fogg fogi fogn fogo foin fong fono foof foon for- forb forg fori forn foro forr frib frig frin frio frob frog fron gbbo gbon gfor ggfg gggg ggrn gibb giff gigg gigi gign gigo ging gini ginn gino giog gioi gion girg giri girn giro girr gnib gnin gnof gnoo gnrr gobi gobo goff gofr gogi gogo goif goin gon- gong goni gonn gono goof goog gooi goon goor gorb gorf gorg gori gorn goro gorr grbr grib grif grig grin grni grob grof grog groi gron groo gror grrr i-go i-no ibfi ibon ibri ibro ifbb ifni ifno ifnr ifor ifrb ifrf ifri igbo igni igno igon igoo igor igri iiii iiio iino iioi iioo inbo infi info ingo inig inni inno innr ino- inoi inon inor inri inro iobi ioii ioio ioni ionn iono ioof iooi iooo iorg iori iri- irig irin irio irob iron irri n-ii nbbo nfff nfib nfon ngio ngon ngor ngri nibi nibo niff nigg nigo niir ning nini nino niog nion nioo niro nngn nnnn nobi nobo nofi nogg nogo noib noif noin noio noir non- nong noni nonn nono noo- noob noon nooo noor nor- norb norf norg nori norn noro norr nron obbo obin oboi obon obor obri obro off- offo offr ofgo ofno ofor ogb ogfr oggi ogin ogni ogog ogoi ogon ogri ogro oigo oiii oion ongi ongo onir onni onno onon onor oobi ooff oooo orbb orbi orbo orff orfi orgn orgo ori- orif orig orin orio orni orno oro- orof oron oror orri orro rbbb rbbr rgbi rib- ribo riff rigg rigi rigo riif riin rinf ring rinn rino rion riri rnbr rnin rob- robb robi robo roff rofo rogg rogi rogo roif roig roin roio roir rong roni rono roob roof roog rooi roon roor rori roro rrif rrrr