-ing bbbb bbbs bbin bbng bggs bgun bibb bibi bibs bigb bigg bign bigs bigu biin biis bin- bing bini binn bins binu binz bis- biss bisu bizu bizz bnib bnin bnss bsgs bsin bsns bubb bubi bubs bubu bugg bugi bugs buin buis buiu bunb bung buni bunn buns bunu bunz busi buss busu buus buuz buzi buzz bzzz gbbs gggg ggss gibb gibs gibz gigg gigi gign gigs giis ging gini ginn gins ginu giss gius gizi gizz gnib gnin gnus gsis gubb gubi gubs gubu gugb gugg gugi gugu guib guin guis gung gunn guns gunz gusb guss guus gzin gzsz 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 nuzi nzgs 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 sizz snib snig snns snub snug snus ssbn ssgs ssin ssis ssns sssb sssi ssss sub- subb subg subi subs subz sug- sugg sugi suig suin suis sun- sunb sung suni sunn suns sunu sus- susi suss susu susz suus suzi suzu suzz szin szis szss ubbi ubii ubis uggs ugis ugni uguu ungu uni- unii unin unis unni unns uns- unsg unus unuz usbs usin usis usnu ussb usss ussu usui usun usus uuni uusi uuuu uzin uzis uzun uzzi zbus zigg zigi zigs zing zinn zins zisi zizi zizz znng zsss zubi zubu zuni zunz zusi zuun zuzu zzzs zzzz