f--k ffff ffii ffrr fftf fiff fifi fifo fift fiii fiil fiki fili filk fill filo fior firk fiti fitt flii flik flit flok floo flor flot fltk fofo foil foki foli folk foll folo folr folt foof fook fool foot for- fori fork forl foro forr fort foti foto fott frik fril frio frit frol frot ft-l ftii ifil ifit ifor ifrf ifri ifto iiii iiio iiit iioi iioo iitr iitt ikki ikko ikoo ikri ilio ilir ilit ilki ill- illi illo illt ilok iloo ilot ioii ioio ioit ioko iolo ioof iooi iooo iori iotf ioto iri- iril irio irki irri irtf irti itif itil itko itll itof itoi itol itoo itor itrf itri ittf itto k-lo kfff kffk kfil kfio kfir kfit kflf kfli kfll kflo kflt kfok kfoo kfor kfri kfro kfrr kfti kftk kftt kiff kifl kifr kift kiii kiik kiit kikf kiki kikk kiko kikr kikt kili kilk kill kilo kilr kilt kioi kiok kiol kioo kiot kirf kiri kirk kiro kirr kirt kiti kitl kito kitr kitt kkfi kkfr kkft kkik kkit kkkk kklf kkli kkll kklo kkol kkoo kkor kkot kkrf kkrk kkrl kkro kkrr kkrt kktk kktl klff klfi klft klif klik klil klio klir klit klkk klkl klko klkr kllk klok klol kloo klor klrf klrk klrr kltf klti kltk klto kltr kltt koff kofi kofk kofo koft koii koil koir koit kokf koki kokk koko kokr kolf koli kolk koll kolo kolr kolt kooi kook kool kooo koor koot korf kori kork korl koro korr kort koti kotk koto kotr kott krff krfo krft krik kril krio krit krki krkk krko krkr krlf krlt krof kroi krok krol kroo kror krrf krri krrk krrl krro krrr krrt krti krtk krto krtr ktfi ktfl ktfo ktik ktil ktkk ktko ktkr ktkt ktlf ktli ktlk ktlo ktlr ktlt ktok ktoo ktor ktot ktrf ktri ktrk ktrl ktro ktrr ktrt kttf ktti kttk ktto kttr kttt liff lifl lifo lift liii liir liko lili lill lilo lilt lio- lior liri lirk lirl liro lirr lirt liti litl lito litr litt llll lloo loff lofi loft loif loik loir loit loki lokk loko loli loll lolo loof look lool loor loot lori lork loro loti lotl loto lotr lott lrif lroi lrrr lttr off- offo offr ofik ofit ofor oiii oiko oirt oiti okir okko oklo okok okol okor okot okro okto olio olit olki olli ollo olof olor olot ooff oolo oooo oort orff orfi ori- orif oril orio orit orko orlo oro- orof orok oror orot orri orro orto otif otit oto- otof otok otoo otor otro otti otto rffl riff rift riif riki rikk rill rilo riol riot riri riti ritl rito ritt rkkf rlif roff rofl rofo roif roik roil roio roir roit roki rokk roko rokr rolf rolk roll rolo rolt roof rooi rook rool roor root rori rork roro rort roti rotk rotl roto rotr rott rrif rrrr rtlt tfot tiff tifo tift tiit tiki tiko till tilo tilr tilt tiri tirl tiro tirr titi tito titt tkof tkol tlik tlli toff tofi tofo toft toil toit toki toko tol- toli tolk toll tolo tolt toof took tool toor toot torf tori tork toro torr tort toti toto totr tott trfr tri- trif trik tril trio trit troi troo trot trtr ttff tttt