bbbb bbdd bbeb bblb bbpr bd-r bdle bebb bebe bede bedl bedu beeb beed beel beep beer beld bele bell belp belu berd bere berr beru beur bldr bleb bled blee bleu blub blud blue blup blur bpel bprd breb bred bree brel brep brer brlp brrr brud brue brup bubb bube bubu budb budd bude budl budu buel buer bueu bulb buld bule bull bulu bur- burb burd bure burl burp burr buru dblp dbpd dddd ddre ddub debe debu dedd dede dedu deeb deed deel deep deer deld dele dell delp depe depp depr der- derb dere derp derr deue deul deur dlbd dper dpll dred dree drel drub drue drup druu dub- dubb dube dubu dudd dude dudu duel duer dule dull dulu dupe dure duru duul duur ebbr ebed ebel eber ebru ebul ebur edde eddp ede- edel eder edle edru edup edur eede eedu eeee eele el-b el-p elbe elbu elde eldr eled elee eler elle ellu elpe elue elul epee eper eple epll eppp eprb eprp epub erbb erbe erde ereb ered erel erer erld erle erll erpe erre erub erur eude euer eule eur- eure lblr lddp le-u lebd lebu lede leed leel leep leer lele lell lelu lepe lepp lerd lere lerp leud leur lldb lldp lleu llll llud lppl lprp lrdd lrpu lrrr lube ludd lude lued luer lule lull lulu lupe lupu lurd lure luup pbed pblu pdpr pebl ped- pede peed peel peep peer pel- pelb pele pell pelu pepd pepe per- perd pere perl perp perr peru peul peur plbr ple- pleb pled plee pleu plpp plud plue plup plur pper pple pppd pppp ppru ppur pre- preb pred pree prel prep preu prle prlr prpd prrd prud prue pruu pu-e pube publ pubu pudu pued puel puer pueu pule pull pulp pulu pupe pupl pupu pur- purb pure purl purp purr puru rbbb rbbr rble rdbp rder rebb rebe rebu redd rede redl redr redu reeb reed reel reep relb reld rele rell relp repe repl repp repr repu rerd rere reru reue reul reup reuu rlee rleu rpdp rred rrle rrrr rubb rube rubp rubu rudd rude rudl rudp rued ruel ruer rule rull rupe rupp rurd rure rurp ruru ruud u-rp ubbe uber uble ubud udel uder udpd uele uell ulde uleb ulee ulle ullr ulul upbe uped uplb uppe uppp uppu upup urbe urde urdu ure- ured urle urre urup urur uulu uuuu