f--k ffff ffii ffrr ffss fftf fiff fifi fifo fift fiii fiil fiki fili filk fill filo fils fior fios firk firs fisi fisk fiss fist fiti fits fitt flii flik flis flit flok floo flor flos flot fltk flts fofo foil fois foki foli folk foll folo folr fols folt foof fook fool foos foot for- fori fork forl foro forr fors fort fosi foso foss fost foti foto fots fott frik fril frio fris frit frol fros frot frso frst fsfi fsfo fssf ft-l ftii ftos ftrs ftsr ifil ifis ifit ifor ifrf ifri ifso ifto iiii iiio iiis iiit iioi iioo iios iirs iisi iisr iist iitr iitt ikki ikko ikoo ikri ilio ilir ilis ilit ilki ilks ill- illi illo ills illt ilok iloo ilos ilot ilts ioii ioio ioit ioko iolo ioof iooi iooo ioos iori iors ioso iotf ioto iri- iril irio iris irki irks irri irrs irsf irtf irti irts isil isis isit iskf isko isls iso- isof isok isol isor isos isri issf issi isso issr isss isti isto istr ists itif itil itis itko itll itof itoi itol itoo itor itos itrf itri itrs itsf itsi itso ittf itto k-lo k-os kfff kffk kfil kfio kfir kfis kfit kflf kfli kfll kflo kfls kflt kfok kfoo kfor kfri kfro kfrr kfrs kfsi kfsk kfsr kfst kfti kftk kftt kiff kifl kifr kifs kift kiii kiik kiis kiit kikf kiki kikk kiko kikr kikt kili kilk kill kilo kilr kilt kioi kiok kiol kioo kiot kirf kiri kirk kiro kirr kirs kirt kisf kisi kisk kisl kiso kisr kiss kist kiti kitl kito kitr kits kitt kkfi kkfr kkfs kkft kkik kkit kkkk kklf kkli kkll kklo kkls kkol kkoo kkor kkot kkrf kkrk kkrl kkro kkrr kkrs kkrt kksf kksi kksr kkss kkst kktk kktl kkts klff klfi klft klif klik klil klio klir klis klit klkk klkl klko klkr klks kllk klls klok klol kloo klor klos klrf klrk klrr klrs klsf klsi klsr klst kltf klti kltk klto kltr kltt koff kofi kofk kofo koft koii koil koir koit kokf koki kokk koko kokr koks kolf koli kolk koll kolo kolr kols kolt kooi kook kool kooo koor koos koot korf kori kork korl koro korr kors kort kos- kosf kosi koso kosr koss kost koti kotk koto kotr kots kott krff krfo krfs krft krik kril krio kris krit krki krkk krko krkr krks krlf krlt krof kroi krok krol kroo kror kros krrf krri krrk krrl krro krrr krrs krrt krsf krsk krsl krsr krss krst krti krtk krto krtr krts ksfi ksfo ksfr ksft ksif ksii ksik ksil ksir ksis ksit kskf kskk ksko kskr ksks ksli kslk ksll kslo kslr kslt ksof ksoi ksok ksol ksoo ksor ksos ksrf ksro ksrr ksrs ksrt kssi kssl ksso kssr ksss ksst ksti kstk kstl ksto kstr ksts kstt ktfi ktfl ktfo ktfs ktik ktil ktis ktkk ktko ktkr ktks ktkt ktlf ktli ktlk ktlo ktlr ktlt ktok ktoo ktor ktot ktrf ktri ktrk ktrl ktro ktrr ktrs ktrt ktsf ktsl ktso ktsr ktst kttf ktti kttk ktto kttr ktts kttt lfts liff lifl lifo lift liii liir liis liko lili lill lilo lils lilt lio- lior lios liri lirk lirl liro lirr lirs lirt lisi lisk liso liss list liti litl lito litr lits litt lkfs lkrs llks llll lloo loff lofi loft loif loik loir lois loit loki lokk loko loli loll lolo lols loof look lool loor loos loot lori lork loro lors losi loso loss lost loti lotl loto lotr lots lott lrif lroi lrrr lrst lrts ls-r lsof lsso lssr lsts ltrs ltsi ltsr lttr off- offo offr offs ofik ofit ofor ofst oiii oiko oiks oils oios oirt oist oiti okir okko oklo okok okol okor okot okro oksi okso okto olfs olio olis olit olki olli ollo olof olor olos olot olsi olst ooff oofs oolo oooo ooos oort oosi oost oots orff orfi orfs ori- orif oril orio oris orit orko orlo oro- orof orok oror oros orot orri orro orrs orsi orsk orso orto orts osii osik osis oski osli oslo osoi osoo osor osos osro ossi osso osti ostr osts otif otis otit oto- otof otok otoo otor otos otro otrs otso otti otto otts rffl riff rifs rift riif riis riki rikk rill rilo riol rios riot riri rirs risi risk riso riss rist riti ritl rito rits ritt rkkf rkos rkss rkts rlif rlls roff rofl rofo roif roik roil roio roir rois roit roki rokk roko rokr roks rolf rolk roll rolo rolt roof rooi rook rool roor roos root rori rork roro rort rosi roso ross rost roti rotk rotl roto rotr rots rott rrif rrrr rsis rsos rssl rsts rtls rtlt rtss rtts s-ii s-os sfio sfls sfor sfos sfro sfss sfts siff sifl sifo sifr sift siik siit siki siko sikr siks sil- silf sili silk sill silo sils silt siol sior sios siot sirf siri sirk siro sirr sirs sirt sisi sisk siss sist sit- siti sito sits sitt skif skik skil skio skir skis skit skol skor skot skrt skss sl-i slft slik slir slit sloo slos slot slrs slst slts sofi sofo soft soif soik soil soir sois soit soki sokk soko solf soli solk soll solo solr sols solt soof sook sool soor soos soot sori soro sorr sors sort sosi soso soss sost sotk sotl soto sots srfi sris sros srtr ssfl ssis ssit sslt ssot ssri ssrl ssrs sssf sssi ssss sstl ssts stif stik stil stio stir stis stit stks stlo stlt stof stok stol stoo stor stos stot stri strk stro strs stsf stsi stss sttr tfot tfrs tfsi tfss tiff tifo tift tiit tiki tiko till tilo tilr tils tilt tios tiri tirl tiro tirr tirs tisi tiso tiss tist titi tito tits titt tkof tkol tkos tkts tlik tlli tlos tlrs toff tofi tofo toft toil tois toit toki toko tol- toli