ffff ffii ffrr fftf fiff fifi fifo fift fiii fiil fili fill filn filo fini finn fino fint fion fior firn fiti fitt flii flin flit flon floo flor flot fofo foil foin foli foll folo folr folt fono font foof fool foon foot for- fori forl forn foro forr fort foti foto fott fril frin frio frit frol fron frot ft-l ftii i-no ifil ifit ifni ifno ifnr ifor ifrf ifri iftn ifto iiii iiio iiit iino iioi iioo iitr iitt ilin ilio ilir ilit ill- illi illo illt ilni ilno iloo ilot infi infl info init inni inno innr ino- inoi inol inon inor inot inri inro inti intl intn into intr ioii ioio ioit iolo ioni ionn iono ioof iooi iooo iori iotf ioto iri- iril irin irio iron irri irtf irti itif itil itin itll itno itof itoi itol iton itoo itor itrf itri ittf itto liff lifl lifo lift liii liin liir lili lill lilo lilt linn lino lint lio- lion lior liri lirl lirn liro lirr lirt liti litl lito litr litt llll lloo loff lofi lofn loft loif loin loir loit loli loll lolo loni lono lonr lont loof lool loon loor loot lori lorn loro loti lotl loto lotr lott lrif lroi lron lrrr ltnt lttr n-ii nfff nfon nfto niff nift niir niit nili nill nilo nilt nini ninl nino nion nioo niro nirt nitf niti nito nitr nnit nnnn nnot nntn nofi noif noil noin noio noir noit nolf noli noll nolo nolt non- noni nonn nono nont noo- nool noon nooo noor noot nor- norf nori norn noro norr nort not- noti noto nott nron nrrl nrtl ntfl ntof ntrl ntto nttr off- offo offr ofit ofno ofor oiii oint oion oirt oiti olin olio olit olli ollo olof olon olor olot onil onir onit onlf onni onno onon onor ont- onti onto ooff oolo oont oooo oort orff orfi ori- orif oril orin orio orit orlo orni orno oro- orof oron oror orot orri orro orto otif otin otit oto- otof oton otoo otor otro otti otto rffl riff rift riif riin rill rilo rinf rinn rino riol rion riot riri riti ritl rito ritt rlif rlin rnin rnli rnnt rnot roff rofl rofo roif roil roin roio roir roit rolf roll rolo rolt roni rono ront roof rooi rool roon roor root rori roro rort roti rotl rotn roto rotr rott rrif rrrr rtlt tfin tfot tiff tifo tift tiit till tiln tilo tilr tilt tini tinn tino tint tion tiri tirl tiro tirr titi tito titt tlli tlon tnfl toff tofi tofo toft toil toit tol- toli toll tolo tolt toni tonn tono toof tool toon toor toot torf tori torn toro torr tort toti toto totr tott trfr tri- trif tril trin trio trit trno troi tron troo trot trtr ttff ttfn tton tttt