bbbb bbbs bblb bbls bbng bbrg bggs bgun blls blrg blss blub blur blus bnrr bnss brls brns brrr brrs brsb brsr brug brun brus bsgs bsns bubb bubs bubu bugg bugs bulb bulg bull buls bulu bunb bung bunn buns bunu bur- burb burg burl burn burr burs buru buss busu buus gbbs gggg ggrn ggss glrb glub glug glun glur gnrr gnus grbr grrl grrr grrs grss grub grug grun grur grus gsur gubb gubs gubu gugb gugg gugu gulb gull guls gulu gung gunn guns gurb gurg gurl gurn gurr gurs guru gusb guss guus lblr lbrs lbug lgbu llbs llll lngs lrgb lrrr ls-r lsbu lssr lubs lugg lugs lugu lull lulu lung lunn luns lurg lurs luss ngns ngsn ngur nguu nlgn nlls nlrb nngn nnls nnnn nnsl nnss nrlb nrrl nslr nsls nsnr nsrl nssb nssr nsss nsub nubl nubs nugs null nung nunn nuns nurl nurn nurr nurs nuru nusl nuss nusu rbbb rbbr rbbs rbsl rbss rlls rlug rnbr rngs rrrr rrun rsgb rsnn rsnr rssl rubb rubs rubu rugg rugs rull rung runn runs rurs ruru russ rusu ruun sbbs sbus sggg sggs sglr sgls sgnl sgss slln slrn slrs slsu slub slug slur snns snrs snub snug snur snus srgb srnn srub ssbn ssbr ssgs ssns ssrg ssrl ssrs sssb ssss sub- subb subg subl subs sug- sugg sul- sull sulu sun- sunb sung sunn suns sunu sur- surg surn surr surs suru sus- suss susu suus ubls uggs ugur uguu ullr ulul ulus ungu unns unrs uns- unsg unus urbs urgu urls urns urss ursu urun urur urus usbl usbr usbs uslu usnr usnu ussb ussr usss ussu usul usun usus uulu uuuu