bbbb bbbs bblb bbls blbt blkb blls blss blst blts blub blus blut bnss bskt bsns bsts btss bttb btus bubb bubs bubu bukk buku bulb bulk bull buls bult bulu bunb bunk bunn buns bunt bunu busk buss bust busu but- buts butt buus kbbb kbbk kbbl kbbs kbbt kbbu kbkb kbkk kbkl kblb kbll kbls kblt kblu kbnl kbnn kbnu kbsb kbsk kbsn kbss kbst kbsu kbtb kbtk kbtl kbtn kbts kbtt kbub kbuk kbul kbun kbus kbut kbuu kkbb kkbl kkbn kkbs kkbt kkkk kklb kkll kkln kkls kknb kknn kkns kknt kknu kksn kkss kkst kksu kktk kktl kkts kktu kkus kkut kkuu klbb klbl klbn klbs klbt klbu klkk klkl klkn klks kllb kllk klls klnn klnt klsn klst klsu kltk kltn kltt klub kluk klun kluu knbb knbn knbt knbu knkk knkt knlb knls knlt knnb knnk knns knsb knsk knsl knsn knss knst knsu kntk kntn knts kntu knub knuk knus knut ksbl ksbn ksbs kskb kskk kskn ksks ksku kslb kslk ksll ksln kslt kslu ksnb ksnk ksnl ksnn ksns ksnt kssl kssn ksss ksst kssu kstb kstk kstl kstn ksts kstt kstu ksub ksun ksut ksuu ktbb ktbl ktbn ktbt ktbu ktkb ktkk ktkn ktks ktkt ktku ktlb ktlk ktln ktlt ktlu ktnk ktnl ktnn ktns ktnt ktsl ktsn ktst ktsu kttk kttn ktts kttt kttu ktub ktul ktun kubb kubs kubu kukk kukl kukn kuks kuku kulb kull kuln kult kulu kunk kuns kunt kunu kusb kusn kust kusu kuts kutt kutu kuub kuuk kuul kuuu llbs llks llll lnnk lnts lsbu lsts ltbl ltns ltnt lubs lull lulu lunk lunn luns lunt lusk luss lust luts luuk nknt nlls nnls nnnn nnsl nnss nntn nskk nsls nssb nsss nstl nsts nstu nsub ntnu ntsb ntss ntsu nubk nubl nubs nuku null nunk nunn nuns nunt nusl nuss nust nusu nuts nutt nutu nuuk sbbs sbst sbtk sbtn sbus skn- skss skul skun skut slln slst slsu slts slub slut snns snub snus ssbn sslt ssns sssb ssss sstb sstl ssts stbs stks stln stlt stnn stns stss stub stuk stul stun stus stut sub- subb subl subs suks suku sul- sulk sull sult sulu sun- sunb sunk sunn suns sunt sunu sus- susk suss sust susu sutu suus tbbs tbst tkts tnks tnts tnut tsks tsst tsts tsun ttbb ttss tttt ttul tubb tubs tubu tuks tulk tull tulu tunb tunk tunn tuns tunu tusk tuss tust tutl tuts tutt tutu ubls ults ultt uluk ulul ulus unkl unkn unks unns uns- unst untb unts unus unut us-k usbl usbs uslu usnu ussb usss usst ussu ustb usts usul usun usus utsl uttu uulu uuuu