bbbb bbeb bblb bebb bebe bebo beeb beel beep bele bell belo belp beo- bepo bleb blee bleo blob bloo blop bobb bobe bobo boee boel boeo boep bole boll bolo boob booe bool boop bope bopp bpel bpoe ebbo ebel eboe ebol eboo ebpo eeee eele el-b el-p elbe elbo elee eleo elle ello elpe eole eolo epee eple epll epol eppo eppp lebo leel leep lele lell lelo lepe lepo lepp llll lloo lob- lobb lobe lobo loeb lole loll lolo loob looe lool loop lope lopp lppl o-eo obbo obel oble oboe obol oele olbo ole- oleo olle ollo olpe oobe oolo oooo opel opep ople opo- oppo pebl peel peep pel- pelb pele pell pelo pepe pepo ple- pleb plee pleo plob ploo plop plpp pobo poel pole poll polo pool poop pop- pope popo popp pple pplo pppo pppp