rigol irgol rgiol griol igrol girol riogl irogl roigl origl iorgl oirgl rgoil groil rogil orgil goril ogril igorl giorl iogrl oigrl goirl ogirl riglo irglo rgilo grilo igrlo girlo rilgo irlgo rligo lrigo ilrgo lirgo rglio grlio rlgio lrgio glrio lgrio iglro gilro ilgro ligro gliro lgiro riolg irolg roilg orilg iorlg oirlg rilog irlog rliog lriog ilrog lirog rolig orlig rloig lroig olrig lorig iolrg oilrg ilorg liorg olirg loirg rgoli groli rogli orgli gorli ogrli rgloi grloi rlgoi lrgoi glroi lgroi rolgi orlgi rlogi lrogi olrgi lorgi golri oglri glori lgori olgri logri igolr giolr ioglr oiglr goilr ogilr iglor gilor ilgor ligor glior lgior iolgr oilgr ilogr liogr oligr loigr golir oglir gloir lgoir olgir logir
Note: these 'words' (valid or invalid) are all the permutations of the word rigol. These words are obtained by scrambling the letters in rigol.