c-cor ccccc cfour cnnfn cnnnn co-co cocc- cocco cocon cocur cofur cokk- conck conco concr confu connu cono- conon conor corfo corfu corno cornu coro- coron corun couco couru crock croco cronk crook croon crouk croun cruck crunk cruor cucuk cukor cunco cuoco curno curro fcron fonck forno forro forur fouro frock frorn fruko fu-fu fucko fuco- fucun funck funko fuoco fuorn furo- furor knock knokk knork knorr knuck knuff knurr ko-ko kocon kofun kokko kokor kokou kokur konno konnu konro konur koonu koorn kooru korck korff korku korno koron koror korro koruk korun koufu kouno krnuo krock kronk kroon kroun krufc krunk kruun kucuk kukko kukok kukur kunku kunur kurku kuruc kuruk nconf nnfcc nnooo no-no nofor nofou nofun nokko nokon non-u nonno noonu norco noroc norok noron norro norun nroff nu-nu nucor nunon nunun nuoro nurfc nuruk nurun occur ockro ocorn offof offon offun ofono oforn ofour okkur okoc okoro okuku okuru onco- onoff onoon onorn onour ooooo orcon orfor ornon oroco orono oruku oruro ouoro ourno r-co- ro-ro rocco rockn rocko rocor rocou rofor rokkk rokon ronco ronk- ronko ronno ronok rouko ruffo rufo- runcu runo- runof runon u-con uconn ufofu uknof uncok uncon uncor unfun unfur unkur unnun unnur unoor unorn unrun unurn uofnc urkun urnok urour urucu uuork uuuuu