fluor- fluoro foofoo foofur forlot forout forrot fortul foufou fourof fourou fourto frollo frootl fukuro fullof fultot furfur furour furrfu futuro k-tool kkoktu klokot klotok kofuku kokofu kokoku kokolo kokoro kokott kokufu kolluk kololo koltur kookoo kootoo koottu korkor korkut kororo koruru kotoko kottur kotuku kouffo koukou koulfo koulou kouoro kourou kourtt koutou kullur kulolo kuloor kultuk kultur kululu kuo-fu kurkul kuroko kurort kururu lloro lokrur lokutu loloru lookto looloo lotoko lotuko loukou loulou lourlo loutou loutro lufful lukulu lurulu offutt oftfor okkult okollo oluklu oofotr ookroo oooooo orloff oroluk orrour ortulu ottoor outfor outlot outoul outour outtro roflol rokkor rokuko rokuro rollot roloff rootof rotolo rotork rotour rotout rotrou rotulo rouful routot rukutu rurutu rutour ruurlo tkoutt to-fro tokuko tokulu tokuro toluol tookto tootoo torfou torolf tororo tortor tortou totoro totrot tou-fu tourou toutou toutuo trokut trollt trotro truful trullo tuktuk tuotuo turko- turtuk turtur tururu tutour tuttul tuttut ulloor urkulu utkoor utroor utukku utukur uutool