doper odper dpoer pdoer opder poder doepr odepr deopr edopr oedpr eodpr dpeor pdeor depor edpor pedor epdor opedr poedr oepdr eopdr peodr epodr dopre odpre dpore pdore opdre podre dorpe odrpe drope rdope ordpe rodpe dproe pdroe drpoe rdpoe prdoe rpdoe oprde porde orpde ropde prode rpode doerp oderp deorp edorp oedrp eodrp dorep odrep droep rdoep ordep rodep derop edrop dreop rdeop erdop redop oerdp eordp oredp roedp erodp reodp dpero pdero depro edpro pedro epdro dpreo pdreo drpeo rdpeo prdeo rpdeo derpo edrpo drepo rdepo erdpo redpo perdo eprdo predo rpedo erpdo repdo operd poerd oeprd eoprd peord epord opred pored orped roped proed rpoed oerpd eorpd orepd roepd eropd reopd perod eprod preod rpeod erpod repod
Note: these 'words' (valid or invalid) are all the permutations of the word doper. These words are obtained by scrambling the letters in doper.