ffff ffps ffss ffun fluf flus fnsp fnuf fsln fspf fssf fssp fuff fufu full fuls fulu funf funs fuss fusu llll llps lnfs lpfp lpns lppl lpss lspl lssp luff lufu lull lulu lunn luns lupu luss luup n-up nfff nfps nfsu nlls nlsp nnls nnnn nnsl nnss nppl npsl npss nsfs nslp nsls nsps nssf nssp nsss nuff null nunn nuns nups nusl nuss nusu pfff pfps plff plpp plss plup plus pnln pnnl pnpp pnup pppn pppp ppps ppsf ppss psfs pspp psps puff pull pulp puls pulu puns punu pupl pups pupu puss sfls sfss sfsu slln sllp slpp slps slsu slup snfu snlf snns snpp snus spfs splp spls spns sppf spps spsp spss spun spus ssfl ssfp sslp ssns sspf sspl ssps sssf ssss suf- suff sufs sufu sul- sulf sull sulp sulu sun- sunn suns sunu sup- supp sups sus- susp suss susu suus ulul ulus unfp unlf unlp unns unps uns- unus upnp uppp uppu upup usfl usfs uslp uslu usnu uspp usps ussf usss ussu usul usun usus uulu uuuu