-ing bbbb bbbs bbin bbng bggs bgun bibb bibi bibs bigb bigg bign bigs bigu biin biis bin- bing bini binn bins binu biny bis- biss bisu bisy biys 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 busy buus buyi buys buyu bygg byng bysb bysi byss bysy byun gbbs gggg ggss gibb gibs giby gigg gigi gign gigs giis ging gini ginn gins ginu giss gius gnib gnin gnus gsis gubb gubi gubs gubu guby gugb gugg gugi gugu guib guin guis gung gunn guns guny gusb guss guus guys guyu gyn- gyng gysi gyss gyuu i-by ibis ibns ibsn ibss ibus ibuy ibyi iggs iggy igis igni igns ignu igny igus iiii iiis iisi iisu inby ings inig inis inni inns innu inny inss insu inui inun inus isbn isin isis issi isss issu issy isus isys iugs iuiu iuss iyng n-ii ngns ngsn nguu nibi nibs nigg nigs niiu ning nini nins nisi niss nisu niyi nngn nnnn nnss nsin nsis nssb nsss nsub nubi nubs nuby nugs nuin nung nunn nuns nuny nusi nuss nusu nusy nuys nyny nyss s-ib s-ii sbbs sbig sbsi sbus sggg sggs sgss sibi sibs sibu siby sigg sigi sign sigs sigy sing sini sinn sins sinu siny sisi siss sisu sisy siui sius siyi siyu snib snig snns snsy snub snug snus snys ssbn ssby 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 suny sus- susi suss susu susy suus suyi suyn suyu sygn syis syn- syng syns synu syny syss syun ubbi ubii ubis uggs ugis ugni ugny uguu ungu uni- unii unin unis unni unns uns- unsg unus usbs usin usis usnu ussb usss ussu ussy usui usun usus uuni uusi uuuu uuyn uyin ybbs ygun ying yins yiss ynug ysby ysii yssu ysyb yubu yugg yugi yugs yugu yuin yung yuns yuny yuyu yyyy