-itis fili- filip fills filst filtu filur firit first fissi fists fitil fitit fitri fitts fitup flipp flips flipt flirr flirt flist flits fluff fluit flurr flurt fluss friis frill fripp friss frist frits fritt fruit fruli frust ftpfs ftrtt fu-fu fuffs fullf fulls fults fulup furil furir furls furps furrs furst furus fusi- fusil fusts fusus futsu futur if-- ifill ifits ifius ifrit ifttt iiiii iiris iisir iitti ilfis iliff ilift ilisu illit illui illus iltis iltur ilulu ipils ipiti ipsi- ipsus irill iris- iriss irisu irrit irssi irupi is-is isfit isili isill isisi isiti isits isitt islip ispup issru issus issuu istlt istup istus isuli isuus itfit itisi itrip itsit itsup itsus ittti itu-r itu-t ituri ituru itutu iuliu iulus iupps iuput l-sit li-fi lifts liisi lilfu lilis liliu lilli lilts lilus lipis lippi lipps lipsi lipus liril lirui lisis lisps liss- lissu lists litir litis litsi litti litui litup liuli llrrs ltifr luffs luiff lulli lulls lulul lulus lupis luppi lupsu lupul lupus lurup lusis lusti lusts lusus lutfi lutsi lutsu lutui luuri piilu piiri piisi piisu pili- pilis pills pilur pilus pilut pipil pipis pipit pipli pippi pipri pipul pirri pirui pirus pissi pisti pitip pitis pitri pitrs pitru pitti pitts piuri piuru piusi plips plitt plstr pluff pluit plupp pluri plut- pluti priis priit prill priss prist priti pritt prius pruss psil- pssst pssts ptil- ptprf ptprr ptprs ptprt ptpru puffs puits pulis pull- pulli pulls pullu pulps pults pulut pupil pupri puris purli purls purrs purul purus pusil putis putit putt- putti putts puttu putup puuri puurs ri-fi riffs rifts riisu rills ripit ripup rirpu risps rissp risti risus risut ritsu ritts ritus rlrts rrsps rsssf rsust ruffs rufi- rufus ruili ruiru rulli rupit rupsi russi rusts rustu rutli rutul ruutu s-iii siftr sifts sifus siili siirt silli sills silpi silts silur sipit sippi sipsi sipti siptu siris siriu sirsi sirup sirur sisil sisis sisli sissi sissu sists sitit sitsi sitti situp situs siuri siuru siusi siutu slift slip- slips slipt slirp slirt sliss slits slitu slsts sluff sluis sluit slurf slurp slurs sluss sluts spiff spili spill spilt spir- spirr spirt spiss spitf spiti spits splif split sprit sprut spult spurl spurr spurs spurt sputs spuul sruti sssss stfis stiff stift stiif stiir still stilp stils stilt stips stirp stirs stirt stitt strif stril strip strit strrs strui strul strut stu-i stuff stuft stuir stull stulp stult stupp stups sturt stuss suffr suffs sufis suflu sufri suftu suift suist suits sulf- sulis sulli sulls sulur sulus sulut supls suppl supps supsi supts supur suput surfs surif surir suris surpu surti surtr surui surul surur surus susil susus sutil sutri suttu ti-ti tiffs tifts tiifp tilfi tilip tilli tills tilsi tilst tilts tipil tipis tipit tippi tippu tipup tiris tirit tirli tirls tirrs tirru tirtl tirur tisis tisri tiss- tissi tissu tisul tisur titii titil titis titli titti titup titus tppts triip trill tripi tripl tripp trips tript tris- triss trist trit- trits tritt truff truis truit trull truls trups trupt truss trust truus tsili tstlt tsuru tsuur ttttt tuffi tuffs tufit tufts tuili tuits tulip tulir tulls tulsi tului tulus tupis tuppi turfs turit turps turri tursi turss turst tursu turtu turul turup turut tussi tutli tutsi tutti tutus tuuli tuuri tuuru uifli uispp uitti ullur ulpur ululu ulupi uluru uluti uplit uppli upput urist urris ursus urtlu uruit uruli ururi urusi uruti urutu uspis ustup ustur usuli usurp ususi usutu utfsf utili utils utsul uttur uturu uusis uuuuu