bbbb bbbs bblb bbls blbt blkb blls blss blst blts blub blus blut bly- blyk blys bskt bsts btss bttb btus bubb bubs bubu bukk buku buky bulb bulk bull buls bult bulu busk buss bust busu busy but- buts butt buty buus buyl buys buyu bylt bysb bysl byss byst bysy byts byul kbbb kbbk kbbl kbbs kbbt kbbu kbkb kbkk kbkl kbky kblb kbll kbls kblt kblu kbsb kbsk kbss kbst kbsu kbsy kbtb kbtk kbtl kbts kbtt kbub kbuk kbul kbus kbut kbuu kbuy kbyb kbys kbyu kkbb kkbl kkbs kkbt kkkk kklb kkll kkls kkss kkst kksu kktk kktl kkts kktu kkty kkus kkut kkuu kkys kkyy klbb klbl klbs klbt klbu klkk klkl klks klky kllb kllk klls klly klst klsu klsy kltk kltt klty klub kluk kluu klyk klyt klyy ksbl ksbs ksby kskb kskk ksks ksku ksky kslb kslk ksll kslt kslu kssl ksss ksst kssu kstb kstk kstl ksts kstt kstu ksty ksub ksut ksuu ksyl ksyy ktbb ktbl ktbt ktbu ktby ktkb ktkk ktks ktkt ktku ktlb ktlk ktlt ktlu ktsl ktst ktsu ktsy kttk ktts kttt kttu ktty ktub ktul ktyl kubb kubs kubu kuby kukk kukl kuks kuku kuky kulb kull kult kulu kuly kusb kust kusu kuts kutt kutu kuty kuub kuuk kuul kuuu kuyu kuyy kybb kyby kykk kyks kyky kyll kyls kylt kysk kysl kyst kyts kytt kyty kyuk kyul kyus kyuu kyyk kyys kyyt kyyy llbs llks llll lsbu lsts ltbl lubs luby luky lull lulu lusk luss lust luts luuk luys luyt lyly lys- lysl lyss lyst lytt sbbs sbst sbtk sbus skss skul skut sky- skys skyy slst slsu slts slub slut slys ssby sslt sssb ssss sstb sstl ssts stbs stks stlt stss stub stuk stul stus stut stuy styk styl stys sub- subb subl subs suks suku suky sul- sulk sull sult sulu sus- susk suss sust susu susy sutu suty suus suyu syl- sylk syll syls sylt syss syst sytt syyk tbbs tbst tkts tsks tsst tsts tsys ttbb ttss tttt ttul ttyl ttys tubb tubs tubu tuks tulk tull tulu tuly tusk tuss tust tutl tuts tutt tutu tuty tuyl tuys tyl- tyll tyss tyst tytt tyty tyus ubls ubly ukky ully ults ultt uluk ulul ulus ulys us-k usbl usbs uslu ussb usss usst ussu ussy ustb usts usul usus utby utsl uttu uulu uuuu uyts ybbs ykut ykyt ylls ylyk ysby yssu ysyb ytky yubu yuks yuku yuky yuls yulu yust yutu yuty yuyu yyyy