bbbb bbdd bbdo bbin bbpr bd-r bdii bdin bibb bibi bibo bidi bido bidr bidu biin bin- bind bini binn bino binu bio- bioi bion biou bipp bipu birb bird biri birn biro birr biru bnib bnin bnor bnpp bnrr bobb bobi bobo bobu bodb bodi bodo bodu boi- boid boii boin boiu bond boni bonn bono bonu boob bood boon boop boor bopp bor- bord bori born boro borr boru boud boun boup bour bprd brdo brid brin brio brno brob brod bron broo bror brou brrr brud brun brup bubb bubi bubo bubu budb budd budi budo budu buid buin buir buiu bunb bund buni bunn buno bunu buon bur- burb burd buri burn buro burp burr buru d-bo dbpd dbrn dddd ddpo ddub dibb dibo dibp didi dido didu diii din- dini dinn dino dinu dion diop dior diou dipn dipo dipp dipu dird dirr dnpo dobb dobi dobu dod- dodd dodi dodo doid doin dond doni donn dono donp donr doob dood doon doop door dopo dopp dopr dord dori dorn doro dorp dorr doru doub doud doun doup dour dpin dpni drib drin drip drno drob drod dron drop drou drub drui drup druu dub- dubb dubu dudd dudo dudu duid duin duir dunn duno duo- duon dupo duri durn duro duru duur i-no ibdo ibid ibon ibrd ibri ibro iddo idid idin idio idir idno idon idro idub idun iduo iiii iiio iino iioi iioo iiop inbd inbo ind- indi indo indu inid inni inno innr innu ino- inoi inon inor inou inp- inpi inpp inri inro inui inun inup iobi iod- iodd iodo ioii ioio ioni ionn iono iooi iooo iori ioun ipdi ipid ipin ipod ipop ippo ippr ipri ipur irbp irdo irdp iri- irid irin irio irip irob irod iron irop irri irun iuiu iuno iupp n-ii n-up nbbo nbpp nddb nddo ndnp ndop ndor ndpd ndpr ndri nibi nibo nidd nidi nido niip niir niiu nind nini nino nion nioo niou nipr niro niru niur nndb nnnn nnpi nnpr nobi nobo nobu nodi nodo nodu noib noid noin noio noir non- noni nonn nono nonu noo- noob noon nooo noop noor nor- norb nord nori norn noro norr noun noup nour npin nppd npri nron nrpn nrrd nubi nudd nudi nudo nuin nunn nuno nuon nurd nuri nurn nurp nurr nuru obbo obid obin oboi obon obor obri obro odbo oddd oddi odin odio odir odiu odnb odon odoo odop odor odou odrp odur oido oiii oion ondi ondo onir onni onno onod onon onor onpu onup onur oobi oodi ooid oooo oord opii opin opio opo- opon opor oppi oppo orbb orbi orbo orbu ordn ordo ordu ori- orid orin orio orni orno oro- oron oror orpi orri orro orub orup ouii ouin ouir oun- ound our- ourn ouro ouu- pdpn pdpr pibb pibi pido piip pind pini pinn pino pinp pinu piob pion pipi pipo pipp piri pirn piro pirr piru pnin pnon pnpo pnpp pnro pnup pobo pod- podd podi podo podu poid poin poio pond poni pono ponp pood poon poop poor pop- popi popo popp porb pori porn poro porr poud poui poun poup pour ppib ppid ppod pppd pppn pppo pppp ppru ppur pri- prid prii prin prnd prnp pro- prob prod pron proo prop prou prpd prrd prri prud pruu pubu pudo pudu puid puin puir puiu pund puno punu pupi pupu pur- purb puri puro purp purr puru rbbb rbbr rdbp rdio rib- ribo ribu ridd ridi rido riin rind rinn rino rion riou ripd ripi ripp ripr riri rnbr rndp rnin rnod rob- robb robi robo robu rodd rodi rodo roid roin roio roir roiu rond roni rono roob rood rooi roon roop roor ropo rori roro roru roub roud roun roup rpdp rpii rpob rpon rppn rrrr rrun rubb rubi rubp rubu rudd rudi rudo rudp ruid ruin rund runi runn runo rupp rurd ruri ruro rurp ruru ruud ruun u-rp ubbi ubbo ubid ubii ubir ubod ubon ubud uddi udid udin udir udon udoo udop udpd udun uipi uirr unbd undi undo uni- unii unin unio unir unni unno unon unop unro uor- updo upin upnp upon upor uppp uppu upri upup urbi urdu urib urin uriu urni uro- uroo urpo urri urun urup urur uuni uuno uuri uuuu