-ing bbbb bbin bbng bbrg bbwr bgon bgtw bgun bibb bibi bibo bigb bigg bign bigo bigt bigu bigw biin bin- bing bini binn bino bint binu bio- biog bioi bion biot biou birb birg biri birn biro birr birt biru bito bitt bitu biw- bnib bnin bnor bnrr bnwt bobb bobi bobo bobu bobw bogg bogi bogo bogt boi- boii boin boit boiu bong boni bonn bono bont bonu boob boog boon boor boot boow bor- borg bori born boro borr bort boru borw botb boti botn boto bott botw boun bour bout bouw bowi bown bowr bowt brig brin brio brit brno brob brog bron broo bror brot brou brow brrr brug brun brut btob btor btrt bttb btwn btwo bubb bubi bubo bubu bugg bugi bugo buin buir buit buiu bunb bung buni bunn buno bunt bunu buon bur- burb burg buri burn buro burr burt buru but- buti buto butt bwin bwog gbbo gbon gbtw ggbt gggg ggrn gibb gigg gigi gign gigo ging gini ginn gino ginu giog gioi gion girg giri girn giro girr girt giru gito giur gnib gnin gnit gniw gnoo gnow gnrr gnti gobi gobo gogi gogo goin goit gon- gong goni gonn gono gonu goog gooi goon goor goot gorb gorg gori gorn goro gorr gort goti goto gott gou- goug goun gour gout gown gowt grbr grib grig grin grit grni grob grog groi gron groo gror grot grou grow grrr grub grug grui grun grur grut gtbr gtnw gubb gubi gubu gugb gugg gugi gugu guib guin gung gunn gunt gurb gurg guri gurn guro gurr gurt guru guti guto gutt gutu gwin gwor gwtw gwwr i-go i-no ibon ibot ibri ibro ibtb igbo igni igno ignu igon igoo igor igot igri iiii iiio iiit iino iioi iioo iitr iitt iiwi inbo ingo inig init inni inno innr innu ino- inoi inon inor inot inou inow inri inro intg inti intn into intr intu inui inun inw- inwi iobi iogt ioii ioio ioit ioni ionn iono iooi iooo iorg iori ioto ioug ioun iown iri- irig irin irio irob iron irri irti irun itgo itin itno itoi iton itoo itor itou itri itto itur iuiu iuno iwig iwin iwiw iwno iwon n-ii nbbo nbti ngio ngon ngor ngou ngri ngtn ngur nguu ngwo nibi nibo nigg nigo nigt niir niit niiu ning nini nino niog nion nioo niou niro nirt niru nitb niti nito nitr niur nngn nnit nnnn nnot nntn nobi nobo nobu nogg nogo nogt noib noin noio noir noit non- nong noni nonn nono nont nonu nonw noo- noob noon nooo noor noot nor- norb norg nori norn noro norr nort norw not- noti noto nott notw noun nour nout nowi nown nowt nron ntnu ntru ntto nttr ntui ntwt nubi nuin nuit nung nunn nuno nunt nuon nuri nurn nurr nurt nuru nutt nutu nwbn nwbw obbo obin obit oboi obon obor obot obri obro ogb oggi ogin ogni ogog ogoi ogon ogou ogri ogro ogui ogun ogwr oigo oiii oint oion oirt oiti ongi ongo ongu onir onit onni onno onon onor ont- onti onto onur onut oobi oont oooo oort ootb ootw orbb orbi orbo orbu orgn orgo ori- orig orin orio orit orni orno oro- oron oror orot orri orro orto orub orwo otin otit oto- otog oton otoo otor otow otro otti otto ottu otur otwo ouii ouin ouir ouit oun- oung our- ourn ouro ourt out- outb outi outo ouu- owir owni owow owt- owtt owur rbbb rbbr rgbi rgit rgtr rib- ribo ribu rigg rigi rigo rigu riin ring rinn rino rion riot riou riri riti rito ritt ritu riwo rnbr rnin rnnt rnot rnut rob- robb robi robo robt robu rogg rogi rogo roig roin roio roir roit roiu rong roni rono ront ronw roob roog rooi roon roor root rori roro rort roru rotg roti rotn roto rotr rott roub roun rout rowb rowi rown rowr rowt roww rrrr rrun rubb rubi rubu rugg rugi ruin ruit rung runi runn runo runt ruri ruro ruru ruti ruto rutt rutu ruun ruwi tbit tbrb tibi tibu tigi tigr tiit tiiu ting tini tinn tino tint tinu tion tiou tirb tiri tiro tirr tiru titi tito titt titu tiwi tnut tobi tobo tobt tobu togo togr togt toit tonb tong toni tonn tono tonu toon toor toot torg tori torn toro torr tort toru toti toto totr tott toug toui toun tour tout town tri- trib trig trin trio trit trng trno trog troi tron troo trot trou trow trtr trub trug trun trut truu ttbb tton tttt tubb tubo tubr tubu tugg tugu tuig tuin tuit tuiu tunb tung tuni tunn tuno tunu tuor turb turg turi turn turo turr turt turu tuti tuto tutt tutu tuuo twbt twi- twib twig twin twit twnt two- twob twon twoo twot twrn ubbi ubbo ubii ubir ubit ubon uggo uggt ugni ugri ugro ugur uguu ugwu uint uirr ungo ungu uni- unii unin unio unir unit unni unno unon unro untb unto unut uor- urbi urgi urgu urib urin uriu urni uro- uroo urri urun urur urut utin utor utri utti utto uttu utug utwo uuni uuno uuri uuuu uwin wbbb wbbg wbbi wbbn wbbo wbbr wbbt wbbw wbgb wbgg wbgi wbgn wbgo wbgr wbgt wbgu wbgw wbib wbig wbin wbio wbiw wbnb wbnr wbnw wbob wbog wboi wbon wbor wbow wbrb wbrg wbri wbrn wbrr wbrt wbru wbrw wbtg wbti wbtn wbto wbtr wbtt wbtu wbtw wbui wbut wbuw wbwb wbwi wbwn wbwo wbwt wgbb wgbg wgbn wgbr wgbt wgbw wggg wggn wggo wgib wgig wgir wgit wgnb wgng wgni wgnn wgno wgnr wgnt wgnu wgog wgon wgow wgrb wgri wgro wgrr wgrt wgru wgrw wgtb wgti wgtn wgto wgtr wgtt wgtu wgun wguo wgur wgwb wgwg wgww wibb wibg wibi wibn wibr wibt wibw wigg wign wigo wigw wiig wiii wiin wiit wiiu winb wing wini winn wino winr wint winu winw wiob wiog wioi wion wioo