bbbb bbeb bblb bebb bebe beby beeb beef beel beer beey befe beff bele bell belu bely bere berr beru bery beur beye beyl bffl bleb blee bleu bley blub blue bluf blur bly- blye breb bree bref brel brer brey brfu brrr brue bry- brye bubb bube bubu buel buer bueu bufe buff bufr bulb bule bull bulu bur- burb bure burl burr buru bury buyl buyu byer byle byre byul ebbr ebby ebel eber ebru ebul ebur eeby eeee eefe eefl eele eely eery efbr effy efly el-b elbe elbu elee elef eler eley elfe elle ellu elly elue elul erbb erbe ereb erel erer erle erll erre erub erur erye euer eule eur- eure eury eyeb eyer eyey eyle eyre eyry eyyr fble feeb feel feer fefe feff fele felf fell ferb fere ferr feru fery feyr ffee ffff ffrr flee fler fley flub flue fluf flur fluy flye free frey frub frue frye fubb fubu fuel fuff fufu fule full fulu fur- fure furl furr fury fuyl fuyu fyfe fyle fyre fyry lblr le-u lebu leef leel leer lefe leff lele lell lelu lely lere lery leur leye leyf leyr llef lleu llll llyr lrrr lrry lube luby luef luer lufe luff lufu lule lull lulu lure lury lyef lyer lyfe lyff lyfy lyle lyly lyre lyyf rbbb rbbr rble rebb rebe rebu reeb reef reel refe reff refl refr refu relb rele rell rely rere reru rery reue reuf reul reuu reye rfef rffl rlee rlef rleu rrle rrrr rubb rube rubu ruby ruel ruer rufe ruff rule rull ruly rure ruru ruyl rybe ryeb ryel ryfe ryff ryle ryue ryyf ubbe uber uble ubly uele uell ufel ufer uffe uleb ulee uley ulfe ulle ullr ully ulul ulye urbe ure- urey urfe urff urle urre urry urur uulu uuuu uyle uyre yber ybry ye-u yeel yeer yefe yeff yele yelf yell yelu yerb yere yerl yerr yery yeue yeye yeyr yfel ylle yrle yrly yubu yuel yuer yuff yufu yule yulu yure yury yuye yuyu yyfe yyff yyyy