bbbb bbbs bbin bibb bibi bibs biin biis bin- bini binn bins binu biny bis- biss bisu bisy biys bnib bnin bnss bsin bsns bubb bubi bubs bubu buin buis buiu bunb buni bunn buns bunu busi buss busu busy buus buyi buys buyu bysb bysi byss bysy byun i-by ibis ibns ibsn ibss ibus ibuy ibyi iiii iiis iisi iisu inby inis inni inns innu inny inss insu inui inun inus isbn isin isis issi isss issu issy isus isys iuiu iuss n-ii nibi nibs niiu nini nins nisi niss nisu niyi nnnn nnss nsin nsis nssb nsss nsub nubi nubs nuby nuin nunn nuns nuny nusi nuss nusu nusy nuys nyny nyss s-ib s-ii sbbs sbsi sbus sibi sibs sibu siby sini sinn sins sinu siny sisi siss sisu sisy siui sius siyi siyu snib snns snsy snub snus snys ssbn ssby ssin ssis ssns sssb sssi ssss sub- subb subi subs suin suis sun- sunb suni sunn suns sunu suny sus- susi suss susu susy suus suyi suyn suyu syis syn- syns synu syny syss syun ubbi ubii ubis uni- unii unin unis unni unns uns- unus usbs usin usis usnu ussb usss ussu ussy usui usun usus uuni uusi uuuu uuyn uyin ybbs yins yiss ysby ysii yssu ysyb yubu yuin yuns yuny yuyu yyyy