bbbb bbeb bblb bebb bebe beby beeb beel beer beey bele bell belu bely bere berr beru bery beur beye beyl bleb blee bleu bley blub blue blur bly- blye breb bree brel brer brey brrr brue bry- brye bubb bube bubu buel buer bueu 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 eele eely eery el-b elbe elbu elee eler eley 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 lblr le-u lebu leel leer lele lell lelu lely lere lery leur leye leyr lleu llll llyr lrrr lrry lube luby luer lule lull lulu lure lury lyer lyle lyly lyre rbbb rbbr rble rebb rebe rebu reeb reel relb rele rell rely rere reru rery reue reul reuu reye rlee rleu rrle rrrr rubb rube rubu ruby ruel ruer rule rull ruly rure ruru ruyl rybe ryeb ryel ryle ryue ubbe uber uble ubly uele uell uleb ulee uley ulle ullr ully ulul ulye urbe ure- urey urle urre urry urur uulu uuuu uyle uyre yber ybry ye-u yeel yeer yele yell yelu yerb yere yerl yerr yery yeue yeye yeyr ylle yrle yrly yubu yuel yuer yule yulu yure yury yuye yuyu yyyy