bbbb bbbs bbfn bbin bblb bbls bffl bffs bfsi bibb bibi bibl bibs biff bifi biin biis bili bill bils bilu bin- bini binn bins binu bis- bisl biss bisu blin blis blls blni blss blub bluf blus bnib bnin bnss bsff bsfs bsin bsns bubb bubi bubs bubu buff buif buin buis buiu bulb buli bull buls bulu bunb buni bunn buns bunu busi buss busu buus fbis fbus ffff ffii ffss ffun fibs fiff fifi fiii fiil fili fill filn fils fini finn fins fisi fiss fisu flii flin flis flnb flub fluf flus fnuf fsfi fsln fssf fubb fubs fubu fuff fufu fuil fuli full fuls fulu funf funs fusi fuss fusu ibfi ibis ibns ibsf ibsn ibss ibus ifbb ifil ifis ifni ifns ifsb iiii iiis iisi iisu ilin ilis ill- illi ills ilni ilus infi infl infs inis inni inns innu inss insu inui inul inun inus isbl isbn isil isin isis isls issf issi isss issu isus iuiu iuss libs libu liff lifl liii liin liis lilb lili lill lils lilu linn lins lisi liss lisu liuf liun lius llbs llll lnfs lsbu lubs luff lufu luif luin luis luli lull lulu luni lunn luns lusi luss n-ii nbfl nbuf nfff nfib nfsu nibi nibs niff niiu nili nill nils nilu nini ninl nins nisi nisl niss nisu nlls nnls nnnn nnsl nnss nsfs nsin nsis nsls nssb nssf nsss nsub nubi nubl nubs nuff nuin nuli null nunn nuns nusi nusl nuss nusu s-ib s-ii sbbs sbsi sbus sfls sfnb sfss sfsu sibi sibs sibu siff sifl sifu sil- silf sili sill sils silu sini sinn sins sinu sisi siss sisu siui sius sl-i slib slln slsu slub snfu snib snlf snns snub snus ssbn ssfl ssin ssis ssns sssb sssf sssi ssss sub- subb subi subl subs suf- suff sufi sufs sufu suin suis sul- sulf suli sull sulu sun- sunb suni sunn suns sunu sus- susi suss susu suus ubbi ubii ubis ubli ubls ulli ulul ulus uni- unif unii unin unis unlf unni unns uns- unus usbl usbs usfi usfl usfs usif usin usis uslu usnu ussb ussf usss ussu usui usul usun usus uulu uuni uusi uuuu