bbbb bbbs bblb bbls bggs blkb blls blss blub blus bsgs bubb bubs bubu bugg bugs bukk buku bulb bulg bulk bull buls bulu busk buss busu buus gbbs gggg ggss glub glug gskb gubb gubs gubu gugb gugg gugu gulb gull guls gulu gusb guss guus kbbb kbbg kbbk kbbl kbbs kbbu kbgb kbgg kbgl kbkb kbkg kbkk kbkl kblb kblg kbll kbls kblu kbsb kbsg kbsk kbss kbsu kbub kbuk kbul kbus kbuu kgbb kggg kggl kgkl kgks kglb kglk kgls kgsl kgus kkbb kkbg kkbl kkbs kkgb kkgl kkkk kklb kkll kkls kkss kksu kkus kkuu klbb klbl klbs klbu klgb klgl klgu klkk klkl klks kllb kllk klls klsu klub klug kluk kluu ksbl ksbs ksgg ksgl ksgu kskb kskg kskk ksks ksku kslb kslg kslk ksll kslu kssl ksss kssu ksub ksug ksuu kubb kubs kubu kugb kugs kukk kukl kuks kuku kulb kull kulu kusb kusg kusu kuub kuuk kuul kuuu lbug lgbu llbs llks llll lsbu lubs lugg lugs lugu lull lulu lusk luss luuk sbbs sbus sggg sggs sgls sgss skss skul slsu slub slug ssgs sssb ssss sub- subb subg subl subs sug- sugg suks suku sul- sulk sull sulu sus- susk suss susu suus ubls uggs uguu uksg uluk ulul ulus us-k usbl usbs uslu ussb usss ussu usul usus uulu uuuu