bbbb bbdd bbdo bbfn bbin bd-r bdii bdin bduf bibb bibi bibo bidi bido bidr bidu biff bifi biin bin- bind bini binn bino binu bio- bioi bion biou birb bird biri birn biro birr biru bnib bnin bnor bnrr bobb bobi bobo bobu bodb bodi bodo bodu bofd boff bofu boi- boid boii boin boiu bond boni bonn bono bonu boob bood boof boon boor bor- bord borf bori born boro borr boru boud bouf boun bour brdo brfu brid brin brio brno brob brod bron broo bror brou brrr brud brun bubb bubi bubo bubu budb budd budi budo budu buff bufo bufr buid buif buin buir buiu bunb bund buni bunn buno bunu buon bur- burb burd buri burn buro burr buru d-bo dbfo dbrn dddd ddub dfrf dfri dibb dibo didi dido didu dif- diff diii din- dini dinn dino dinu dion dior diou dird dirr dobb dobi dobu dod- dodd dodi dodo doff doid doin dond doni donn dono donr doob dood doof doon door dord dorf dori dorn doro dorr doru doub doud douf doun dour drib drif drin drno drob drod drof dron drou drub drui druu dub- dubb dubu dudd dudo dudu duff dufu duid duif duin duir dunn duno duo- duon duri durn duro duru duur ffff ffii ffrr ffun fidf fido fiff fifi fifo fiii find fini finn fino fion fior firn fndd fndn fndr fnuf fofo foid foin fond fono food foof foon for- forb ford fori forn foro forr foud foun four frib frid frin frio frob fron frou frub frun fubb fubu fudd fudi fuff fufu fuid fuir fund funf fuor fur- furi furn furo furr i-no ibdo ibfi ibid ibon ibrd ibri ibro iddo idid idin idio idir idno idon idrf idro idub idun iduo ifbb ifid ifni ifno ifnr ifor ifrb ifrf ifri iiii iiio iino iioi iioo inbd inbo ind- indi indo indu infi info inid inni inno innr innu ino- inoi inon inor inou inri inro inui inun iobi iod- iodd iodo ioii ioio ioni ionn iono ioof iooi iooo iori ioun irdo irfu iri- irid irin irio irob irod iron irri irun iuiu iuno n-ii nbbo nbuf nddb nddo ndfi ndor ndrf ndri nfff nfib nfon nibi nibo nidd nidi nido niff niir niiu nind nini nino nion nioo niou niro niru niur nndb nnnn nobi nobo nobu nodi nodo nodu nofi noib noid noif noin noio noir non- noni nonn nono nonu noo- noob noon nooo noor nor- norb nord norf nori norn noro norr noun nour nron nrrd nubi nudd nudi nudo nuff nuin nunn nuno nuon nurd nuri nurn nurr nuru obbo obid obin oboi obon obor obri obro odbo oddd oddi odin odio odir odiu odnb odon odoo odor odou odur ofdr off- offo offr offu ofid ofno ofor oido oiii oion ondi ondo onir onni onno onod onon onor onur oobi oodi ooff ooid oooo oord orbb orbi orbo orbu ordn ordo ordu orff orfi orfu ori- orid orif orin orio orni orno oro- orof oron oror orri orro orub ouff ouii ouin ouir oun- ound our- ourn ouro ouu- rbbb rbbr rdio rfdi rfid rib- ribo ribu ridd ridi rido riff rifu riif riin rind rinf rinn rino rion riou riri rnbr rndf rnin rnod rob- robb robi robo robu rodd rodi rodo roff rofo roid roif roin roio roir roiu rond roni rono roob rood roof rooi roon roor rori roro roru roub roud rouf roun rrif rrrr rrun rubb rubi rubu rudd rudi rudo ruff rufo ruid ruif ruin rund runf runi runn runo rurd ruri ruro ruru ruud ruun ubbi ubbo ubid ubii ubir ubod ubon ubud uddi udid udin udir udon udoo udun uirr unbd undi undo unfd uni- unif unii unin unio unir unni unno unon unrf unro uofo uor- urbi urdu urff urfi urib urif urin uriu urni uro- uroo urri urun urur uuni uuno uuri uuuu