ffff ffii ffrr ffun fiff fifi fifo fiii fiil fili fill filn filo fini finn fino fion fior firn flii flin flon floo flor flou fluf fluo flur fnuf fofo foil foin foli foll folo folr fono foof fool foon for- fori forl forn foro forr foul foun four fril frin frio frol fron frou frun fuff fufu fuil fuir fuli full fulu funf fuor fur- furi furl furn furo furr i-no ifil ifni ifno ifnr ifor ifrf ifri iiii iiio iino iioi iioo ilin ilio ilir ill- illi illo ilni ilno iloo infi infl info inni inno innr innu ino- inoi inol inon inor inou inri inro inui inul inun ioii ioio iolo ioni ionn iono ioof iooi iooo iori ioun irfu iri- iril irin irio iron irri irul irun iuiu iuno liff lifl lifo liii liin liir lili lill lilo lilu linn lino lio- lion lior liri lirl lirn liro lirr liru liuf liun llll lloo loff lofi lofn loif loin loir loiu loli loll lolo loni lono lonr loof lool loon loor lori lorn loro loui loul loun lour louu lrif lroi lron lrrr luff lufu luif luin luli lull lulu luni lunn luno luri n-ii nfff nfon niff niir niiu nili nill nilo nilu nini ninl nino nion nioo niou niro niru niur nnnn nofi noif noil noin noio noir nolf noli noll nolo non- noni nonn nono nonu noo- nool noon nooo noor nor- norf nori norn noro norr noul noun nour nron nrrl nuff nuin nuli null nunn nuno nuon nuri nurl nurn nurr nuru off- offo offr offu ofno ofor oiii oion olin olio olli ollo olof olon olor olur onil onir onlf onni onno onon onor onur ooff oolo oooo orff orfi orfu ori- orif oril orin orio orlo orlu orni orno oro- orof oron oror orri orro ouff ouii ouin ouir oulu oun- our- ourn ouro ouu- rffl riff rifu riif riin rill rilo rilu rinf rinn rino riol rion riou riri rlif rlin rnin rnli roff rofl rofo roif roil roin roio roir roiu rolf roll rolo roni rono roof rooi rool roon roor rori roro roru rouf roul roun rrif rrrr rrun ruff rufo ruif ruin rull rulo runf runi runn runo ruri ruro ruru ruun uirr ulli ullo ullr ulno ulo- ulul uni- unif unii unin unio unir unlf unni unno unon unrf unro uofl uofo uor- urff urfi urif urin uriu urni uro- urol uroo urri urun urur uulu uuni uuno uuri uuuu