floko flook floor florn floro floru flour fluff flunk fluo- fluon fluor flurn flurr follo folon forno forro forur fouro frorn fruko fu-fu fullf fullo funko fuorn furo- furor klonk kloof klunk knokk knoll knork knorr knuff knurl knurr ko-ko kofun kokko kokor kokou kokur kolff kollo kollu kolno kolol kolun kolur konno konnu konro konur koolu koonu koorn kooru korff korku korno korol koron koror korro koruk korun koufu koulo kouno krnuo kroll kronk kroon kroun krull krunk kruun kukko kukok kukur kullo kullu kulno kulor kulul kulun kulur kunku kunur kurku kurlu kuruk l-ron lofou lokur lollo lolol lonko lookf loron loruk lorun louro lukko lukok lukou lulul lurun nkolo nnooo no-no nofor nofou nofun nokko nokon nokul non-u nonno noonu norok noron norro norun nroff nu-nu nuklo nullo nunon nunun nuoro nurlu nuruk nurun offof offon offun ofono oforn ofour okfol okkur okoro okuku okuru ollon ollur olour onoff onoon onorn onour ooooo orfor orful orlok orlon ornon orolu orono oruku oruro oullo oulon oulun ouoro ourno ourol ro-ro rofor rokkk rokon rolfo rollo rolok rolon ronk- ronko ronno ronok rouko roulk roull ruffo rufo- rufol rullo rulon runo- runof runon ufofu uknof ukoln ullur ulno- ululu uluru unfun unfur unkur unnun unnur unoor unorn unrol unrun unurn urkun urnok urour uuork uuuuu