bbbb bbdd bbin bblb bbpr bd-r bdii bdin bibb bibi bibl bidi bidr bidu biin bild bili bill bilu bin- bind bini binn binu bipp bipu birb bird biri birl birn birr biru bldr blin blip blir blni blub blud blup blur bnib bnin bnpp bnrr bprd brid bril brin brlp brrr brud brun brup bubb bubi bubu budb budd budi budl budu buid buin buir buiu bulb buld buli bull bulu bunb bund buni bunn bunu bur- burb burd buri burl burn burp burr buru dblp dbnl dbpd dbrn dddd ddub dibb dibp didi didu diii dili dill din- dini dinn dinu dipl dipn dipp dipu dird dirl dirr dlbd dlib dlii dlil dpin dpll dpni drib dril drin drip drub drui drup druu dub- dubb dubu dudd dudu duid duil duin duir duli dull dulu dunn duri durn duru duul duur ibid ibrd ibri idid idil idin idir idli idub idun iiii ilin ilir ill- illd illi illp ilni ilpr ilud inbd ind- indi indu inid inni innr innu inp- inpi inpp inri inui inul inun inup ipdi ipid ipil ipin ippr ipri ipur irbp irdp iri- irid iril irin irip irlb irri irul irun iuiu iupp lblr lddp libr libu lidb lidl liii liin liir lilb lili lill lilu lind linn lip- lipb lipi lipl lipp lipu lird liri lirl lirn lirp lirr liru liun lldb lldp llll llud lnbp lndn lppl lprp lrdd lrpu lrrr ludd ludi luin luli lull lulu lund luni lunn lupi lupu lurd luri luup n-ii n-up nbpp nddb ndnp ndpd ndpr ndri nibi nidd nidi niip niir niiu nild nili nill nilp nilu nind nini ninl nipr niru niur nlrb nlrp nndb nnnn nnpi nnpr npbl npin nppd nppl npri nrlb nrpn nrrd nrrl nubi nubl nudd nudi nuin nuli null nunn nurd nuri nurl nurn nurp nurr nuru pbil pblu pdpn pdpr pibb pibi piip pil- pild pili pill pilu pind pini pinn pinp pinu pipi pipp piri pirl pirn pirr piru plbr pldn plib plid plin plip plpp plri plud plup plur pnin pnld pnln pnnl pnpp pnup ppib ppid ppli pppd pppn pppp ppru ppur pri- prid prii prin prlr prnd prnp prpd prrd prri prud pruu publ pubu pudu puid puin puir puiu puli pull pulp pulu pund punu pupi pupl pupu pur- purb puri purl purp purr puru rbbb rbbr rdbp rib- ribu ridd ridi riin rill rilp rilu rind rinn ripd ripi ripl ripp ripr riri rlin rnbr rndp rnin rnld rnli rpdp rpii rppn rrrr rrun rubb rubi rubp rubu rudd rudi rudl rudp ruid ruin rull rund runi runn rupp rurd ruri rurp ruru ruud ruun u-rp ubbi ubid ubii ubir ubli ubud uddi udid udin udir udpd udun uipi uirr ulli ullr ulul unbd undi uni- unii unin unir unlp unni upin uplb upnp uppp uppu upri upup urbi urdu urib urin uriu urni urri urun urup urur uulu uuni uuri uuuu