bbbb bbdd bbeb bbet bblb bdle bebb bebe bede bedl beeb beed beel beep beet beld bele bell belp belt bete bett blbt bleb bled blee blet bpel btbp btdt btlp bttb dblp dbpd dbtt dddd debe debt dedd dede deeb deed deel deep deet deld dele dell delp delt depe depp dept dete dlbd dpdt dpll dtdp dted dtle dtpl dttp ebed ebel edde eddp ede- edel edle eede eeee eele eete el-b el-p elbe elde eled elee elet elle elpe elte epee eple epll eppp epte etee etel ette lddp lebd lede ledt leed leel leep leet lele lell lepe lepp lept lete lett lldb lldp llet llll lppl lptb ltbl ltee pbed pebl ped- pede peed peel peep peet pel- pelb pele pell pelt pepd pepe pete pett pldt ple- pleb pled plee plet plpp pltt pple pppd pppp pptt ptbl ptld ptpd tbtp tddb tedd tede teed teel teet tel- teld tele tell telt tepe tepp tete tett tldp tped tpld tppd tppp tpte tptp ttbb tttt