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ffff ffii ffrr ffss fftf fiff fifi fift fiii fiil fili fill fils firs fisi fiss fist fisu fiti fits fitt flii flis flit flts fluf flur flus fril fris frit frst fsfi fssf ft-l ftii ftrs ftsr fuff fufu fuil fuir fuit fuli full fuls fulu fur- furi furl furr furs furt fusi fuss fust fusu futi futs futu ifil ifis ifit ifrf ifri iiii iiis iiit iirs iisi iisr iist iisu iitr iitt ilir ilis ilit ill- illi ills illt ilts ilus ilut irfu iri- iril iris irri irrs irsf irtf irti irts irul irus isil isis isit isls isri issf issi issr isss issu isti istr ists isus itif itil itis itll itrf itri itrs itsf itsi itsu ittf itur iuiu iuss iust lfts liff lifl lift liii liir liis lili lill lils lilt lilu liri lirl lirr lirs lirt liru lisi liss list lisu liti litl litr lits litt litu liuf lius liut llll lrif lrrr lrst lrts ls-r lssr lsts ltrs ltsi ltsr lttr luff luft lufu luif luis luit luli lull lulu luri lurs lurt lusi luss lust luti luts rffl riff rifs rift rifu riif riis rill rilu riri rirs risi riss rist risu riti ritl rits ritt ritu rius rlif rlls rrif rrrr rsis rssl rsts rstu rtls rtlt rtss rtts ruff ruft ruif ruis ruit rull ruri rurs ruru rusi russ rust rusu ruti rutl ruts rutt rutu s-ii sfls sfss sfsu sfts siff sifl sifr sift sifu siit sil- silf sili sill sils silt silu sirf siri sirr sirs sirt siru sisi siss sist sisu sit- siti sits sitt situ siui sius siut sl-i slft slir slit slrs slst slsu slts slur slut srfi sris srtr ssfl ssis ssit sslt ssri ssrl ssrs sssf sssi ssss sstl ssts stfu stif stil stir stis stit stlt stri strs stru stsf stsi stss sttr stuf stul stur stus stut suf- suff sufi sufr sufs sufu suir suis suit sul- sulf suli sull sult sulu sur- surf suri surr surs surt suru sus- susi suss sust susu suti sutu suus tfrs tfsi tfss tiff tift tiit tiiu till tilr tils tilt tiri tirl tirr tirs tiru tisi tiss tist titi tits titt titu tlli tlrs trfr tri- trif tril tris trit trsi trst trtr trus trut truu tsfl tsis tssf tssi tssr tsst tsts tsui ttff ttss tttt ttul tuff tufi tuft tufu tuil tuis tuit tuiu tuli tull tulu turf turi turr turs turt turu tusi tuss tust tuti tutl tuts tutt tutu uirr uist uits ulft ulli ullr ulti ults ultt ulul ulus urff urfi urft urif uris uriu urls urri ursi urss ursu urts urur urus urut usfi usfl usfs usif usis uslu ussf ussr usss usst ussu usti usts usui usul usus util utis utri utsl utti uttu uulu uuri uusi uutf uuuu

-itis fili- fills filst filtu filur firit first fissi fists fitil fitit fitri fitts flirr flirt flist flits fluff fluit flurr flurt fluss friis frill friss frist frits fritt fruit fruli frust ftrtt fu-fu fuffs fullf fulls fults furil furir furls 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 irill iris- iriss irisu irrit irssi is-is isfit isili isill isisi isiti isits isitt issru issus issuu istlt istus isuli isuus itfit itisi itsit itsus ittti itu-r itu-t ituri ituru itutu iuliu iulus l-sit li-fi lifts liisi lilfu lilis liliu lilli lilts lilus liril lirui lisis liss- lissu lists litir litis litsi litti litui liuli llrrs ltifr luffs luiff lulli lulls lulul lulus lusis lusti lusts lusus lutfi lutsi lutsu lutui luuri ri-fi riffs rifts riisu rills risti risus risut ritsu ritts ritus rlrts rsssf rsust ruffs rufi- rufus ruili ruiru rulli russi rusts rustu rutli rutul ruutu s-iii siftr sifts sifus siili siirt silli sills silts silur siris siriu sirsi sirur sisil sisis sisli sissi