cocco- cockow cococo cocto- coocoo cookoo corour cortot coruco coruro courr- cowcow cowtow cowurt crocco cruro- cuckoo curour curror currow cururo cutcut cutout cuttoo k-rock kkoktu kokoku kokoro kokott kookoo kootoo koottu korkor korkut kororo koruru kotkow kotoko kotowo kottur kotuku koukou kouoro kourou kourtt koutou kowkur kowtow krowor krukow kukoc kukowo kurkcu kuroko kurort kurowo kururu occour ocourt octuor ookroo oooooo orcutt orkowo orrock orrour ortrow otowko ottoor otwock outcut outour outrow outtro outwoo owtour rockto rococo rocoto rokkor rokowt rokuko rokuro rotork rotour rotout rotrou roucou routot rowrow rukutu ruocco rurutu rutour rwtowr tkoutt tktock to-cut tokuko tokuro tookto tootoo tororo tortor tortou totoro totrot tourou toutou toutuo towcok trokut trotro trucco tuktuk tuotuo turcok turko- turkow turowo turtuk turtur turucu tururu tutour tuttut twoout tworow utkoor utroor utukku utukur woowoo worowo worrow wottoo wurrow