bbbb bbbs bbin bbws bibb bibi bibs biin biis bin- bini binn bins binu bis- biss bisu biw- bnib bnin bnss bsin bsns bubb bubi bubs bubu buin buis buiu bunb buni bunn buns bunu busi buss busu buus bwin ibis ibns ibsn ibss ibus iiii iiis iisi iisu iiwi inis inni inns innu inss insu inui inun inus inw- inwi isbn isin isis issi isss issu isus iswn iuiu iuss iwin iwis iwiw n-ii nibi nibs niiu nini nins nisi niss nisu nnnn nnss nsin nsis nssb nsss nsub nubi nubs nuin nunn nuns nusi nuss nusu nusw nwbn nwbw nwss s-ib s-ii sbbs sbsi sbus sibi sibs sibu sini sinn sins sinu sisi siss sisu siui sius siwi snib sniw snns snub snus ssbn ssin ssis ssns sssb sssi ssss ssws sub- subb subi subs suin suis sun- sunb suni sunn suns sunu sus- susi suss susu suus suwu swbs swbw swis swss ubbi ubii ubis uni- unii unin unis unni unns uns- unus usbs usin usis usnu ussb usss ussu usui usun usus uuni uusi uuuu uwin wbbb wbbi wbbn wbbs wbbw wbib wbin wbis wbiw wbnb wbns wbnw wbsb wbss wbsu wbsw wbui wbus wbuw wbwb wbwi wbwn wibb wibi wibn wibs wibw wiii wiin wiis wiiu winb wini winn wins winu winw wisn wiss wisu wisw wius wiuw wiwi wiwn wiwu wnbb wnbi wnbn wnbs wnbu wnbw wnib wnin wnis wniu wniw wnns wnnw wnsb wnsn wnss wnsw wnus wnuw wnwi wnwn wnws wnww wsbb wsbi wsbs wsbu wsbw wsib wsis wsiu wsni wsnn wsnw wssi wsss wssu wssw wsui wsun wsus wsuw wswb wswi wswn wsws wsww wubb wubi wubu wuin wuis wuni wunw wusb wusi wusn wuss wusu wusw wuub wuuu wwbb wwbn wwbu wwib wwii wwin wwis wwnb wwnn wwns wwnw wwsb wwsi wwsn wwss wwsu wwus wwwi wwwn wwws wwww