f--k ffff ffrr ffss fftf ffun fltk flts fluf flur flus fnrs fnuf frns frst frun fsln fssf ft-l ftrs ftsr fuff fufu fukk fuku fulk full fuls fulu funf funk funs funt fur- furl furn furr furs furt fusk fuss fust fusu futs futu kfff kffk kffn kflf kfll kfln kfls kflt kfnf kfnk kfnl kfnn kfns kfrn kfrr kfrs kfru kfsk kfsr kfst kftk kftt kftu kful kfun kfut kkfn kkfr kkfs kkft kkkk kklf kkll kkln kkls kknn kkns kknt kknu kkrf kkrk kkrl kkrn kkrr kkrs kkrt kksf kksn kksr kkss kkst kksu kktk kktl kkts kktu kkus kkut kkuu klff klfn klft klkk klkl klkn klkr klks kllk klls klnn klnt klrf klrk klrn klrr klrs klru klsf klsn klsr klst klsu kltf kltk kltn kltr kltt kluf kluk klun klur kluu knfl knfr knft knkk knkt knlf knlr knls knlt knnk knnr knns knrk knrs knsk knsl knsn knsr knss knst knsu kntk kntn kntr knts kntu knuk knur knus knut krff krfn krfs krft krkk krkn krkr krks krku krlf krln krlt krnk krnn krnt krnu krrf krrk krrl krrn krrr krrs krrt krsf krsk krsl krsn krsr krss krst krsu krtk krtn krtr krts kruf kruk krul krun krur ksfn ksfr ksft kskf kskk kskn kskr ksks ksku kslk ksll ksln kslr kslt kslu ksnf ksnk ksnl ksnn ksnr ksns ksnt ksrf ksrn ksrr ksrs ksrt kssl kssn kssr ksss ksst kssu kstk kstl kstn kstr ksts kstt kstu ksun ksut ksuu ktfl ktfn ktfs ktkk ktkn ktkr ktks ktkt ktku ktlf ktlk ktln ktlr ktlt ktlu ktnf ktnk ktnl ktnn ktns ktnt ktrf ktrk ktrl ktrn ktrr ktrs ktrt ktru ktsf ktsl ktsn ktsr ktst ktsu kttf kttk kttn kttr ktts kttt kttu ktuf ktul ktun kuff kufn kufr kukk kukl kukn kuks kuku kulf kull kuln kult kulu kunk kunr kuns kunt kunu kurk kurl kurr kurs kurt kuru kusf kusn kust kusu kutf kutr kuts kutt kutu kuuk kuul kuur kuuu lfts lkfs lkrs llks llll lnfs lnnk lnts lrrr lrst lrts ls-r lssr lsts ltns ltnt ltrs ltsr lttr luff luft lufu lull lulu lunk lunn luns lunt lurk lurs lurt lusk luss lust luts luuk nfff nfrs nfsr nfsu nknt nkrf nktr nlls nnls nnnn nnsl nnss nntn nrrl nrtl nrts nsfk nsfs nskk nslr nsls nsnr nsrl nssf nssr nsss nstl nsts nstu ntfl ntfs ntnu ntrl ntru ntsf ntss ntsu nttr nuff nuku null nunk nunn nuns nunt nurl nurn nurr nurs nurt nuru nusl nuss nust nusu nuts nutt nutu nuuk rffl rkkf rkss rkts rlls rnnt rnut rrrr rrun rsnn rsnr rssl rsts rstu rtkn rtls rtlt rtns rtss rtts ruff ruft rukk rukn ruku rulk rull runf runk runn runs runt rurs ruru rusk russ rust rusu rutl ruts rutt rutu ruun sfls sfnt sfss sfsu sfts skn- skrt skss skul skun skur skut slft slln slrn slrs slst slsu slts slur slut snfu snlf snns snrk snrs sntr snur snus srnn srtr ssfl sslt ssns ssrl ssrs sssf ssss sstl ssts stfn stfu stks stln stlt stnn stnr stns strk strn strs stru stsf stss sttr stuf stuk stul stun stur stus stut suf- suff sufr sufs sufu suks suku sul- sulf sulk sull sult sulu sun- sunk sunn suns sunt sunu sur- surf surn surr surs surt suru sus- susk suss sust susu sutu suus tfrs tfss tkts tlrs tnfl tnks tnts tnut trfr trst trtr truk trun trus trut truu tsfl tsks tssf tssr tsst tsts tsun ttff ttfn ttss tttt ttul tuff tuft tufu tuks tulk tull tulu tunk tunn tuns tunu turf turk turn turr turs turt turu tusk tuss tust tutl tuts tutt tutu ufuk ukur ulft ullr ults ultt uluk ulul ulus unkl unkn unks unlf unns unrf unrs uns- unst unts unus unut urff urft urls urns urss ursu urts uruk urun urur urus urut us-k usfl usfs uslu usnr usnu ussf ussr usss usst ussu usts usul usun usus utsl uttu uulu uutf uuuu