-ing bbbb bbbs bbin bbng bggs bgun bibb bibi bibs bigb bigg bign bigs bigu biin biis bin- bing bini binn bins binu bis- biss bisu bnib bnin bnss bsgs bsin bsns bubb bubi bubs bubu bugg bugi bugs buin buis buiu bunb bung buni bunn buns bunu busi buss busu buus gbbs gggg ggss gibb gibs gigg gigi gign gigs giis ging gini ginn gins ginu giss gius gnib gnin gnus gsis gubb gubi gubs gubu gugb gugg gugi gugu guib guin guis gung gunn guns gusb guss guus ibis ibns ibsn ibss ibus iggs igis igni igns ignu igus iiii iiis iisi iisu ings inig inis inni inns innu inss insu inui inun inus isbn isin isis issi isss issu isus iugs iuiu iuss n-ii ngns ngsn nguu nibi nibs nigg nigs niiu ning nini nins nisi niss nisu nngn nnnn nnss nsin nsis nssb nsss nsub nubi nubs nugs nuin nung nunn nuns nusi nuss nusu s-ib s-ii sbbs sbig sbsi sbus sggg sggs sgss sibi sibs sibu sigg sigi sign sigs sing sini sinn sins sinu sisi siss sisu siui sius snib snig snns snub snug snus ssbn ssgs ssin ssis ssns sssb sssi ssss sub- subb subg subi subs sug- sugg sugi suig suin suis sun- sunb sung suni sunn suns sunu sus- susi suss susu suus ubbi ubii ubis uggs ugis ugni uguu ungu uni- unii unin unis unni unns uns- unsg unus usbs usin usis usnu ussb usss ussu usui usun usus uuni uusi uuuu