bbbb bbdd bbdo bblb bbpr bd-r bdii bibb bibi bibl bibo bidi bido bidr bidu bild bili bill bilo bilu bio- bioi biol biou bipp bipu birb bird biri birl biro birr biru bldr blio blip blir blob blod bloo blop blou blub blud blup blur bobb bobi bobo bobu bodb bodi bodo bodu boi- boid boii boil boiu bold boli boll bolo bolu boob bood bool boop boor bopp bor- bord bori boro borr boru boud boul boup bour bprd brdo brid bril brio brlp brob brod brol broo bror brou brrr brud brup bubb bubi bubo bubu budb budd budi budl budo budu buid buir buiu bulb buld buli bull bulu buol bur- burb burd buri burl buro burp burr buru d-bo dblp dbpd dddd ddpo ddub dibb dibo dibp didi dido didu diii dili dill dilo diol diop dior diou dipl dipo dipp dipu dird dirl dirr dlbd dlib dlii dlil dobb dobi dobl dobu dod- dodd dodi dodo doid doil dold doli doll dolo dolp dolu doob dood dool doop door dopo dopp dopr dord dori doro dorp dorr doru doub doud doul doup dour dpll drib dril drip drob drod drol drop drou drub drui drup druu dub- dubb dubu dudd dudo dudu duid duil duir duli dull dulo dulu duo- dupo duri duro duru duul duur ibdo ibid ibrd ibri ibro iddo idid idil idio idir idli idol idro idub iduo iiii iiio iioi iioo iiop ilio ilir ill- illd illi illo illp iloo ilpr ilud iobi iod- iodd iodo ioii ioio iolo iooi iooo iopl iori ipdi ipid ipil iplo ipod ipop ippo ippr ipri ipur irbp irdo irdp iri- irid iril irio irip irlb irob irod irop irri irul iuiu iupp lblr lddp libo libr libu lidb lidl lido liii liir lilb lili lill lilo lilu lio- liod lior lip- lipb lipi lipl lipo lipp lipu lird liri lirl liro lirp lirr liru lldb lldp llll llod lloo llud lob- lobb lobi lobo lodi loid loir loiu lold loli loll lolo loob lood lool loop loor lopi lopp lopu lord lori loro loud loui loul loup lour louu lpod lppl lprp lrdd lroi lrpu lrrr ludd ludi ludo luli lull lulu lupi lupo lupu lurd luri luup obbo obid oblu oboi obol obor obri obro odbo oddd oddi odio odir odiu odoo odop odor odou odrl odrp odur oido oiii olbo oldb olib olid olio olli ollo olor olur oobi oodi ooid oold oolo oooo oord opii opio opo- opor oppi oppo orbb orbi orbo orbu ordo ordu ori- orid oril orio orlo orlu oro- oror orpi orri orro orub orup ouii ouir ould oulu our- ouro ouu- pbil pblu pdpr pibb pibi pido piip pil- pild pili pill pilo pilu piob pipi pipo pipp piri pirl piro pirr piru plbr plib plid plio plip plob plod ploo plop plou plpp plri plud plup plur pobo pod- podd podi podo podu poid poil poio pold poli poll polo polu pood pool poop poor pop- popi popo popp porb pori poro porr poud poui poul poup pour ppib ppid ppli pplo ppod pppd pppo pppp ppru ppur pri- prid prii prlr pro- prob prod prol proo prop prou prpd prrd prri prud pruu publ pubu pudo pudu puid puir puiu puli pull pulo pulp pulu pupi pupl pupu pur- purb puri purl puro purp purr puru rbbb rbbr rdbp rdio rib- ribo ribu ridd ridi rido rill rilo rilp rilu riol riou ripd ripi ripl ripp ripr riri rob- robb robi robo robu rodd rodi rodo roid roil roio roir roiu rold roll rolo rolp roob rood rooi rool roop roor ropo rori roro roru roub roud roul roup rpdp rpii rpob rrrr rubb rubi rubp rubu rudd rudi rudl rudo rudp ruid rull rulo rupp rurd ruri ruro rurp ruru ruud u-rp ubbi ubbo ubid ubii ubir ubli ublo ubod ubud uddi udid udir udoo udop udpd uipi uirr ulli ullo ullr ulo- ulul uor- updo uplb uplo upor uppp uppu upri upup urbi urdu urib uriu uro- urol uroo urpo urri urup urur uulu uuri uuuu