ffff ffii ffrr ffss fiff fifi fifo fiii fiil fili fill filn filo fils fini finn fino fins fion fior fios firn firs fisi fiss flii flin flis flon floo flor flos fnrs fofo foil foin fois foli foll folo folr fols fono fons foof fool foon foos for- fori forl forn foro forr fors fosi foso foss fril frin frio fris frns frol fron fros frso fsfi fsfo fsln fssf i-no ifil ifis ifni ifno ifnr ifns ifor ifrf ifri ifso iiii iiio iiis iino iioi iioo iios iirs iisi iisr ilin ilio ilir ilis ill- illi illo ills ilni ilno iloo ilos infi infl info infs inis inni inno innr inns ino- inoi inol inon inor inos inri inro inrs inso inss ioii ioio iolo ioni ionn iono ions ioof iooi iooo ioos iori iors ioso iri- iril irin irio iris iron irri irrs irsf isil isin isis isls isno iso- isof isol ison isor isos isri issf issi isso issr isss liff lifl lifo liii liin liir liis lili lill lilo lils linn lino lins lio- lion lior lios liri lirl lirn liro lirr lirs lisi liso liss llll lloo lnfs lnso loff lofi lofn loif loin loir lois loli loll lolo lols loni lono lonr lons loof lool loon loor loos lori lorn loro lors losi loso loss lrif lroi lron lrrr ls-r lsof lson lsso lssr n-ii nfff nfon nfrs nfsr niff niir nili nill nilo nils nini ninl nino nins nion nioo nios niro nirs nisi nisl niso niss nlls nnls nnnn nnos nnsl nnss nofi noif noil noin noio noir nois nolf noli noll nolo nols non- noni nonn nono nons noo- nool noon nooo noor noos nor- norf nori norn noro norr nors nos- noss nron nrrl nsfs nsin nsis nslr nsls nsnr nsof nsos nsrl nssf nsso nssr nsss off- offo offr offs ofno ofor oiii oils oins oion oios olfs olin olio olis olli ollo olof olon olor olos olsi onil onir onis onlf onni onno onon onor onos onso ooff oofs oolo oons oooo ooos oosi orff orfi orfs ori- orif oril orin orio oris orlo orni orno orns oro- orof oron oror oros orri orro orrs orsi orso osii osin osis osli oslo osno osnr osoi osoo osor osos osro ossi osso rffl riff rifs riif riin riis rill rilo rinf rinn rino riol rion rios riri rirs risi riso riss rlif rlin rlls rnin rnli roff rofl rofo roif roil roin roio roir rois rolf roll rolo roni rono rons roof rooi rool roon roor roos rori roro rosi roso ross rrif rrrr rsis rsnn rsno rsnr rsos rssl s-ii s-os sfio sfls sfor sfos sfro sfss siff sifl sifo sifr sil- silf sili sill silo sils sini sinn sino sins siol sion sior sios sirf siri siro sirr sirs sisi siss sl-i slir slln slon sloo slos slrn slrs snir snlf snns snoo snor snos snrs sofi sofo soif soil soin soir sois solf soli soll soln solo solr sols son- soni sono sons soof sool soon soor soos sori sorn soro sorr sors sosi soso soss srfi sris srni srnn srno sros ssfl ssin ssis ssns ssri ssrl ssrs sssf sssi ssss