ridgy irdgy rdigy drigy idrgy dirgy rigdy irgdy rgidy gridy igrdy girdy rdgiy drgiy rgdiy grdiy dgriy gdriy idgry digry igdry gidry dgiry gdiry ridyg irdyg rdiyg driyg idryg diryg riydg irydg ryidg yridg iyrdg yirdg rdyig dryig rydig yrdig dyrig ydrig idyrg diyrg iydrg yidrg dyirg ydirg rigyd irgyd rgiyd griyd igryd giryd riygd irygd ryigd yrigd iyrgd yirgd rgyid gryid rygid yrgid gyrid ygrid igyrd giyrd iygrd yigrd gyird ygird rdgyi drgyi rgdyi grdyi dgryi gdryi rdygi drygi rydgi yrdgi dyrgi ydrgi rgydi grydi rygdi yrgdi gyrdi ygrdi dgyri gdyri dygri ydgri gydri ygdri idgyr digyr igdyr gidyr dgiyr gdiyr idygr diygr iydgr yidgr dyigr ydigr igydr giydr iygdr yigdr gyidr ygidr dgyir gdyir dygir ydgir gydir ygdir
Note: these 'words' (valid or invalid) are all the permutations of the word ridgy. These words are obtained by scrambling the letters in ridgy.