bbbb bbbs bblb bbls bbng bggs bgun blls blss blub blus bnss bsgs bsns bubb bubs bubu bugg bugs bulb bulg bull buls bulu bunb bung bunn buns bunu buss busu buus gbbs gggg ggss glub glug glun gnus gubb gubs gubu gugb gugg gugu gulb gull guls gulu gung gunn guns gusb guss guus lbug lgbu llbs llll lngs lsbu lubs lugg lugs lugu lull lulu lung lunn luns luss ngns ngsn nguu nlgn nlls nngn nnls nnnn nnsl nnss nsls nssb nsss nsub nubl nubs nugs null nung nunn nuns nusl nuss nusu sbbs sbus sggg sggs sgls sgnl sgss slln slsu slub slug snns snub snug snus ssbn ssgs ssns sssb ssss sub- subb subg subl subs sug- sugg sul- sull sulu sun- sunb sung sunn suns sunu sus- suss susu suus ubls uggs uguu ulul ulus ungu unns uns- unsg unus usbl usbs uslu usnu ussb usss ussu usul usun usus uulu uuuu