gralu rgalu garlu agrlu raglu arglu grlau rglau glrau lgrau rlgau lrgau galru aglru glaru lgaru algru lagru ralgu arlgu rlagu lragu alrgu largu graul rgaul garul agrul ragul argul grual rgual gural ugral rugal urgal gaurl agurl guarl ugarl augrl uagrl raugl arugl ruagl uragl aurgl uargl grlua rglua glrua lgrua rlgua lrgua grula rgula gurla ugrla rugla urgla glura lgura gulra uglra lugra ulgra rluga lruga rulga urlga lurga ulrga galur aglur glaur lgaur algur lagur gaulr agulr gualr ugalr auglr uaglr gluar lguar gular uglar lugar ulgar alugr laugr aulgr ualgr luagr ulagr ralug arlug rlaug lraug alrug larug raulg arulg rualg uralg aurlg uarlg rluag lruag rulag urlag lurag ulrag alurg laurg aulrg ualrg luarg ularg
Note: these 'words' (valid or invalid) are all the permutations of the word gralu. These words are obtained by scrambling the letters in gralu.