roops orops roops orops oorps oorps ropos orpos rpoos proos opros poros ropos orpos rpoos proos opros poros ooprs ooprs opors poors opors poors roosp orosp roosp orosp oorsp oorsp rosop orsop rsoop sroop osrop sorop rosop orsop rsoop sroop osrop sorop oosrp oosrp osorp soorp osorp soorp ropso orpso rposo proso oprso porso rospo orspo rsopo sropo osrpo sorpo rpsoo prsoo rspoo srpoo psroo sproo opsro posro ospro sopro psoro sporo ropso orpso rposo proso oprso porso rospo orspo rsopo sropo osrpo sorpo rpsoo prsoo rspoo srpoo psroo sproo opsro posro ospro sopro psoro sporo oopsr oopsr oposr poosr oposr poosr oospr oospr osopr soopr osopr soopr opsor posor ospor sopor psoor spoor opsor posor ospor sopor psoor spoor
Note: these 'words' (valid or invalid) are all the permutations of the word roops. These words are obtained by scrambling the letters in roops.