-ing bbbb bbbs bbfn bbin bbng bbrg bffs bfgf bfsi bfsr bggs bgon bibb bibi bibo bibs biff bifi bigb bigg bign bigo bigs biin biis bin- bing bini binn bino bins bio- biog bioi bion bios birb birg biri birn biro birr birs bis- biso biss bnib bnin bnor bnrr bnss bobb bobi bobo bobs boff bofs bogg bogi bogo bogs boi- boii boin bois bong boni bonn bono bons boob boof boog boon boor boos bor- borf borg bori born boro borr bors bosi bosn boso boss brig brin brio bris brno brns brob brog bron broo bror bros brrr brrs brsb brsr bsff bsfs bsgs bsin bsns bson bsos fbis fbrs ffff ffii ffrr ffss fibs fiff fifi fifo figg figo figs fiii fing fini finn fino fins fion fior fios firn firs fisi fiss fnrs fobs fofo fogg fogi fogn fogo fogs foin fois fong fono fons foof foon foos for- forb forg fori forn foro forr fors fosb fosi foso foss frib frig frin frio fris frns frob frog fron fros frsb frso fsfi fsfo fsgs fssf gbbo gbbs gbon gfor ggfg gggg ggrn ggss gibb gibs giff gifs gigg gigi gign gigo gigs giis ging gini ginn gino gins giog gioi gion girg giri girn giro girr girs giss gnib gnin gnof gnoo gnrr gobi gobo gobs goff gofr gogi gogo gogs goif goin gois gon- gong goni gonn gono gons goof goog gooi goon goor goos gorb gorf gorg gori gorn goro gorr gors gosi goso goss grbr grib grif grig grin gris grni grob grof grog groi gron groo gror gros grrr grrs grss gsif gsis gson gsos i-go i-no ibfi ibis ibns ibon ibos ibri ibro ibsf ibsn ibss ifbb ifis ifni ifno ifnr ifns ifor ifrb ifrf ifri ifsb ifso igbo iggs igis igni igno igns igon igoo igor igri igso iiii iiio iiis iino iioi iioo iios iirs iisi iisr inbo infi info infs ingo ings inig inis inni inno innr inns ino- inoi inon inor inos inri inro inrs inso inss iobi ioii ioio ioni ionn iono ions ioof iooi iooo ioos iorg iori iors ioso irgs iri- irig irin irio iris irob iron irri irrs irsf irsg isbn isin isis isno iso- isof ison isor isos isrg isri issf issi isso issr isss n-ii nbbo nfff nfib nfon nfrs nfsr ngfs ngio ngns ngon ngor ngos ngri ngsn nibi nibo nibs niff nigg nigo nigs niir ning nini nino nins niog nion nioo nios niro nirs nisi niso niss nngn nnnn nnos nnss nobi nobo nobs nofi nogg nogo nogs noib noif noin noio noir nois non- nong noni nonn nono nons noo- noob noon nooo noor noos nor- norb norf norg nori norn noro norr nors nos- noss nron nsbo nsfs nsin nsis nsnr nsof nsos nssb nssf nsso nssr nsss obbo obin obis oboi obon obor obos obri obro obsn obsr obss off- offo offr offs ofgo ofno ofor ogb ogfr oggi ogin ogni ogog ogoi ogon ogri ogro ogsi oigo oiii oins oion oios ongi ongo onir onis onni onno onon onor onos onso oobi ooff oofs oons oooo ooos oosi orbb orbi orbo orbs orff orfi orfs orgn orgo orgs ori- orif orig orin orio oris orni orno orns oro- orof oron oror oros orri orro orrs orsi orso osgi osii osin osis osno osnr osoi osoo osor osos osro ossb ossi osso rbbb rbbr rbbs rbis rbss rfgs rgbi rib- ribo ribs riff rifs rigg rigi rigo rigs riif riin riis rinf ring rinn rino rion rios riri rirs risi riso riss rnbr rngs rnin rob- robb robi robo robs roff rofo rogg rogi rogo roif roig roin roio roir rois rong roni rono rons roob roof roog rooi roon roor roos rori roro rosi roso ross rrif rrrr rsbi rsgb rsis rsnn rsno rsnr rsos s-ib s-ii s-os sbbs sbig sbor sbsi sfio sfnb sfog sfor sfos sfro sfss sggg sggs sgio sgro sgss sibi sibo sibs siff sifo sifr sigg sigi sign sigo sigs sing sini sinn sino sins sion sior sios sirf siri siro sirr sirs sisi siss snib snig snir snns snob snog snoo snor snos snrs sobo sobr sobs sofi sofo sogi sogn sogo sogs soif soin soir sois son- song soni sono sons soof soog soon soor soos sorb sorg sori sorn soro sorr sors sosi soso soss srfi srgb srib sris srni srnn srno sros ssbn ssbr ssgs ssin ssis ssns ssrg ssri ssrs sssb sssf sssi ssss