f--k ffff ffss ffun fluf flus fnuf fsln fssf fuff fufu fukk fuku fulk full fuls fulu funf funk funs fusk fuss fusu kfff kffk kffn kflf kfll kfln kfls kfnf kfnk kfnl kfnn kfns kfsk kful kfun kkfn kkfs kkkk kklf kkll kkln kkls kknn kkns kknu kksf kksn kkss kksu kkus kkuu klff klfn klkk klkl klkn klks kllk klls klnn klsf klsn klsu kluf kluk klun kluu knfl knkk knlf knls knnk knns knsk knsl knsn knss knsu knuk knus ksfn kskf kskk kskn ksks ksku kslk ksll ksln kslu ksnf ksnk ksnl ksnn ksns kssl kssn ksss kssu ksun ksuu kuff kufn kukk kukl kukn kuks kuku kulf kull kuln kulu kunk kuns kunu kusf kusn kusu kuuk kuul kuuu lkfs llks llll lnfs lnnk luff lufu lull lulu lunk lunn luns lusk luss luuk nfff nfsu nlls nnls nnnn nnsl nnss nsfk nsfs nskk nsls nssf nsss nuff nuku null nunk nunn nuns nusl nuss nusu nuuk sfls sfss sfsu skn- skss skul skun slln slsu snfu snlf snns snus ssfl ssns sssf ssss suf- suff sufs sufu suks suku sul- sulf sulk sull sulu sun- sunk sunn suns sunu sus- susk suss susu suus ufuk uluk ulul ulus unkl unkn unks unlf unns uns- unus us-k usfl usfs uslu usnu ussf usss ussu usul usun usus uulu uuuu