-ene bbbb bbdd bbeb bbpr bd-r bebb bebe bede beeb beed been beep beer bend bene benn berd bere bern berr bner bnpp bnrr bprd breb bred bree bren brep brer brrr dbpd dbrn dddd ddre debe dedd dede deeb deed deen deep deer dene denn depe depp depr der- derb dere dern derp derr dner dper dred dree dren ebbr ebed eben eber edde eddp ede- eden eder edrn eede eeee eend enb- enbn enbr end- ende ened enee ener enne enp- epee epen eper eppp eprb eprp erbb erbe erde ereb ered eren erer erne erpe erre nber nbpp nddb ndde nder ndnp ndpd ndpr ndre nebb nebe nebn nebr nedd nede neeb need neen neep neer nend nene nepe nepr nerd nere nerr nndb nnnn nnpr nppd nren nrpn nrrd pbed pdpn pdpr ped- pede peed peen peep peer pen- pend pene penn pepd pepe per- perd pere pern perp perr pnpp ppen pper pppd pppn pppp pre- preb pred pree pren prep prnd prnp prpd prrd rbbb rbbr rdbp rder rebb rebe redd rede redr reeb reed reen reep rend rene renn repe repp repr rerd rere rnbr rndp rpdp rppn rred rrrr