grail rgail garil agril ragil argil grial rgial giral igral rigal irgal gairl agirl giarl igarl aigrl iagrl raigl arigl riagl iragl airgl iargl grali rgali garli agrli ragli argli grlai rglai glrai lgrai rlgai lrgai galri aglri glari lgari algri lagri ralgi arlgi rlagi lragi alrgi largi grila rgila girla igrla rigla irgla grlia rglia glria lgria rlgia lrgia gilra iglra glira lgira ilgra ligra rilga irlga rliga lriga ilrga lirga gailr agilr gialr igalr aiglr iaglr galir aglir glair lgair algir lagir gilar iglar gliar lgiar ilgar ligar ailgr ialgr aligr laigr ilagr liagr railg arilg rialg iralg airlg iarlg ralig arlig rlaig lraig alrig larig rilag irlag rliag lriag ilrag lirag ailrg ialrg alirg lairg ilarg liarg
Note: these 'words' (valid or invalid) are all the permutations of the word grail. These words are obtained by scrambling the letters in grail.