cocco- cococo cocto- coocoo cookoo corour cortot coruco coruro courr- crocco cruro- cuckoo curfur curour curror cururo cutcut cutoff cutout cuttoo foofoo foofur forcut forout forrot foufou fourcc fourof fourou fourto frucor fukuro furfur furour furrfu futuro k-rock kkoktu kofuku kokofu kokoku kokoro kokott kokufu kookoo kootoo koottu korkor korkut kororo koruru kotoko kottur kotuku kouffo koukou kouoro kourou kourtt koutou kukoc kuo-fu kurkcu kuroko kurort kururu occour ocourt octuor offcut offutt oftfor oofotr ookroo oooooo orcutt orrock orrour ottoor outcut outfor outour outtro rockof rockto rococo rocoto rokkor rokuko rokuro rootof rotork rotour rotout rotrou roucou routot rukutu ruocco rurutu rutour tkoutt tktock to-cut to-fro tokuko tokuro tookto tootoo torfou tororo tortor tortou totoro totrot tou-fu tourou toutou toutuo trokut trotro trucco tuktuk tuotuo turcok turko- turtuk turtur turucu tururu tutour tuttut utkoor utroor utukku utukur