-ous ffff ffii ffrr ffss fftf fiff fifi fifo fift fiii fiil fili fill filo fils fior fios firs fisi fiss fist fisu fiti fits fitt flii flis flit floo flor flos flot flou flts fluf fluo flur flus fofo foil fois foli foll folo folr fols folt foof fool foos foot for- fori forl foro forr fors fort fosi foso foss fost foti foto fots fott foul four fous fout fril frio fris frit frol fros frot frou frso frst fsfi fsfo fssf ft-l ftii ftos ftrs ftsr fuff fufu fuil fuir fuit fuli full fuls fulu fuor fur- furi furl furo furr furs furt fusi fuso fuss fust fusu futi futo futs futu ifil ifis ifit ifor ifrf ifri ifso ifto iiii iiio iiis iiit iioi iioo iios iirs iisi iisr iist iisu iitr iitt ilio ilir ilis ilit ill- illi illo ills illt iloo ilos ilot ilts ilus ilut ioii ioio ioit iolo ioof iooi iooo ioos iori iors ioso iosu iotf ioto ious irfu iri- iril irio iris irri irrs irsf irtf irti irts irul irus isil isis isit isls iso- isof isol isor isos isri issf issi isso issr isss issu isti isto istr ists isus itif itil itis itll itof itoi itol itoo itor itos itou itrf itri itrs itsf itsi itso itsu ittf itto itur iuiu iuss iust lfts liff lifl lifo lift liii liir liis lili lill lilo lils lilt lilu lio- lior lios liri lirl liro lirr lirs lirt liru lisi liso liss list lisu liti litl lito litr lits litt litu liuf lius liut llll lloo loff lofi loft loif loir lois loit loiu loli loll lolo lols loof lool loor loos loot lori loro lors losi loso loss lost loti lotl loto lotr lots lott loui loul lour lous lout louu lrif lroi lrrr lrst lrts ls-r lsof lsso lssr lsts ltrs ltsi ltsr lttr luff luft lufu luif luis luit luli lull lulu luri lurs lurt lusi luso luss lust luti luts off- offo offr offs offu ofit ofor ofst ofus oiii oils oios oirt oist oisu oiti olfs olio olis olit olli ollo olof olor olos olot olsi olst oltu olur ooff oofs oolo oooo ooos oort oosi oost oots oous orff orfi orfs orfu ori- orif oril orio oris orit orlo orlu oro- orof oror oros orot orri orro orrs orsi orso orsu orto orts orus osii osis osli oslo osoi osoo osor osos osro ossi osso ossu osti ostr osts osul otif otis otit oto- otof otoo otor otos otro otrs otso otsu otti otto otts ottu otur otus ouff ouii ouir ouis ouit ouls oulu our- ouro ours ourt oust out- outi outo outs ouu- rffl riff rifs rift rifu riif riis rill rilo rilu riol rios riot riou riri rirs risi riso riss rist risu riti ritl rito rits ritt ritu rius rlif rlls roff rofl rofo roif roil roio roir rois roit roiu rolf roll rolo rolt roof rooi rool roor roos root rori roro rort roru rosi roso ross rost roti rotl roto rotr rots rott rouf roul rous rout rrif rrrr rsis rsos rssl rsts rstu rtls rtlt rtss rtts ruff rufo ruft ruif ruis ruit rull rulo ruri ruro rurs ruru rusi ruso russ rust rusu ruti rutl ruto ruts rutt rutu s-ii s-os sfio sfls sfor sfos sfro sfss sfsu sfts siff sifl sifo sifr sift sifu siit sil- silf sili sill silo sils silt silu siol sior sios siot siou sirf siri siro sirr sirs sirt siru sisi siss sist sisu sit- siti sito sits sitt situ siui sius siut sl-i slft slir slit sloo slos slot slrs slst slsu slts slur slut sofi sofo soft soif soil soir sois soit solf soli soll solo solr sols solt soof sool soor soos soot sori soro sorr sors sort soru sosi soso soss sost sotl soto sots sotu souf soul sour sous sout srfi sris sros srtr ssfl ssis ssit sslt ssot ssri ssrl ssrs sssf sssi ssss sstl ssts stfu stif stil stio stir stis stit stlo stlt stof stol stoo stor stos stot stou stri stro strs stru stsf stsi stss sttr stuf stul stur stus stut suf- suff sufi sufr sufs sufu suio suir suis suit sul- sulf suli sull sulo sult sulu suor suos sur- surf suri suro surr surs surt suru sus- susi suso suss sust susu suti suto sutu suus tfot tfrs tfsi tfss tiff tifo tift tiit tiiu till tilo tilr tils tilt tios tiou tiri tirl tiro tirr tirs tiru tisi tiso tiss tist titi tito tits titt titu tlli tlos tlrs toff tofi tofo toft tofu toil tois toit tol- toli toll tolo tolt tolu toof tool toor toos toot torf tori toro torr tors tort toru tosi toso toss tost tosu toti toto totr tots tott toui toul tour tous tout trfr tri- trif tril trio tris trit troi troo tros trot trou trsi trst trtr trus trut truu tsfl tsis tsoi tsol tsos tsou tssf tssi tssr tsst tsts tsui ttff ttss tttt ttul tuff tufi tufo tuft tufu tuil tuis tuit tuiu tuli tull tulo tulu tuor tuos turf turi turo turr turs turt turu tusi tuss tust tuti tutl tuto tuts tutt tutu tuuo ufos uirr uist uits ulft ulli ullo ullr ulo- ulos ulti ulto ults ultt ulul ulus uofl uofo uor- urff urfi urft urif uris uriu urls uro- urol uroo urri ursi urso urss ursu urts urur urus urut usfi usfl usfs usif usis uslu usoi usos ussf ussr usss usst ussu usti usto usts usui usul usus utfo util utis utor utri utsl utti utto uttu uulu uuri uusi uutf uuuu