-ous bbbb bbbs bbfn bbin bffs bfsi bibb bibi bibo bibs biff bifi biin biis bin- bini binn bino bins binu bio- bioi bion bios biou bis- biso biss bisu bnib bnin bnss bobb bobi bobo bobs bobu boff bofs bofu boi- boii boin bois boiu boni bonn bono bons bonu boob boof boon boos bosi bosn boso boss bosu bouf boun bous bsff bsfs bsin bsns bson bsos bubb bubi bubo bubs bubu buff bufo buif buin buis buiu bunb buni bunn buno buns bunu buon busi buss busu buus fbis fbus ffff ffii ffss ffun fibs fiff fifi fifo fiii fini finn fino fins fion fios fisi fiss fisu fnuf fobs fofo foin fois fono fons foof foon foos fosb fosi foso foss foun fous fsfi fsfo fssf fubb fubs fubu fuff fufu funf funs fusi fuso fuss fusu i-no ibfi ibis ibns ibon ibos ibsf ibsn ibss ibus ifbb ifis ifni ifno ifns ifsb ifso iiii iiio iiis iino iioi iioo iios iisi iisu inbo infi info infs inis inni inno inns innu ino- inoi inon inos inou inso inss insu inui inun inus iobi ioii ioio ioni ionn iono ions ioof iooi iooo ioos ioso iosu ioun ious isbn isin isis isno iso- isof ison isos issf issi isso isss issu isus iuiu iuno iuss n-ii nbbo nbuf nfff nfib nfon nfsu nibi nibo nibs niff niiu nini nino nins nion nioo nios niou nisi niso niss nisu nnnn nnos nnss nobi nobo nobs nobu nofi noib noif noin noio nois non- noni nonn nono nons nonu noo- noob noon nooo noos nos- noss nosu noun nous nsbo nsfs nsin nsis nsof nsos nsou nssb nssf nsso nsss nsub nubi nubs nuff nuin nunn nuno nuns nuon nusi nuss nusu obbo obin obis oboi obon obos obsn obss obus off- offo offs offu ofno ofus oiii oins oion oios oisu onis onni onno onon onos onso onus oobi ooff oofs oons oooo ooos oosi oous osii osin osis osno osoi osoo osos ossb ossi osso ossu osun oubs ouff ouii ouin ouis oun- ouu- s-ib s-ii s-os sbbs sbsi sbus sfio sfnb sfos sfss sfsu sibi sibo sibs sibu siff sifo sifu sini sinn sino sins sinu sion sios siou sisi siss sisu siui sius snfu snib snns snob snoo snos snub snus sobo sobs sobu sofi sofo soif soin sois son- soni sono sons sonu soof soon soos sosi soso soss souf soun sous ssbn ssin ssis ssns sssb sssf sssi ssss sub- subb subi subo subs suf- suff sufi sufs sufu suin suio suis sun- sunb suni sunn suno suns sunu suos sus- susi suso suss susu suus ubbi ubbo ubii ubis ubon ubos ufos uni- unif unii unin unio unis unni unno unns unon unos uns- unso unus uofo usbs usfi usfs usif usin usis usno usnu usoi usos ussb ussf usss ussu usui usun usus uuni uuno uusi uuuu