roums orums ruoms uroms ourms uorms romus ormus rmous mrous omrus morus rumos urmos rmuos mruos umros muros oumrs uomrs omurs mours umors muors rousm orusm ruosm urosm oursm uorsm rosum orsum rsoum sroum osrum sorum rusom ursom rsuom sruom usrom surom ousrm uosrm osurm sourm usorm suorm romsu ormsu rmosu mrosu omrsu morsu rosmu orsmu rsomu sromu osrmu sormu rmsou mrsou rsmou srmou msrou smrou omsru mosru osmru somru msoru smoru rumso urmso rmuso mruso umrso murso rusmo ursmo rsumo srumo usrmo surmo rmsuo mrsuo rsmuo srmuo msruo smruo umsro musro usmro sumro msuro smuro oumsr uomsr omusr mousr umosr muosr ousmr uosmr osumr soumr usomr suomr omsur mosur osmur somur msour smour umsor musor usmor sumor msuor smuor
Note: these 'words' (valid or invalid) are all the permutations of the word roums. These words are obtained by scrambling the letters in roums.