bbbb bbbs bbin bibb bibi bibs biin biis bin- bini binn bins binu biny bipp bips bipu bis- bisp biss bisu bisy biys bnib bnin bnpp bnss bpsu bsin bsns bspp bsup bubb bubi bubs bubu buin buis buiu bunb buni bunn buns bunu bups busi buss busu busy buus buyi buys buyu bysb bysi bysp byss bysy byun i-by ibis ibns ibsn ibss ibus ibuy ibyi iiii iiis iisi iisp iisu inby inis inni inns innu inny inp- inpi inpp insp inss insu inui inun inup inus ipin ippy ipsi ipsp ipss ipus isbn isin isis isps ispy issi issp isss issu issy isup isus isys iuiu iupp iuss n-ii n-up nbpp nbps nbsp nibi nibs niip niiu nini nins nips nisi nisp niss nisu niyi nnnn nnpi nnss npin npss npsy nsin nsis nspi nsps nssb nssp nsss nsub nubi nubs nuby nuin nunn nuns nuny nups nusi nuss nusu nusy nuys nyny nyss pbsp pibb pibi piip pini pinn pinp pins pinu piny pipi pipp pips pipy pisi piss pisu pisy pius piys pnin pnpp pnup ppib pppn pppp ppps ppss psip psis psni pspi pspp psps psy- psys pubs pubu puin puis puiu puns punu puny pupi pups pupu pupy pusi puss puy- puyi puys pyin pyn- pypy pyss s-ib s-ii sbbs sbsi sbsp sbus sibi sibs sibu siby sini sinn sinp sins sinu siny sipi sipp sips sipy sisi siss sisu sisy siui sius siyi siyu snib snip snns snpp snsy snub snus snys spby spib spin spip spis spns spps spsp spss spui spun spus spy- spys ssbn ssby ssin ssis ssns ssps sssb sssi ssss sub- subb subi subs suin suis sun- sunb suni sunn suns sunu suny sup- supp sups supy sus- susi susp suss susu susy suus suyi suyn suyu syis syn- syns synu syny syss syun ubbi ubii ubis uipi uni- unii unin unis unni unns unps uns- unus upby upin upis upnp uppp uppu uppy upsi upsy upup usbs usin usip usis usnu uspp usps ussb usss ussu ussy usui usun usus uuni uusi uuuu uuyn uyin ybbs yins yips yiss ypsi ysby ysii ysnp yspi yssu ysyb yubu yuin yuns yuny yupi yups yuyu yyyy