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-ous ffff ffrr ffss fftf ffun flom flon floo flor flos flot flou flts fluf flum fluo flur flus fmno fmsr fmss fnrs fnuf fofo foll folo folr fols folt fomo fomt fono fons font foof fool foom foon foos foot for- forl form forn foro forr fors fort foso foss fost fotm foto fots fott foul foun four fous fout frmn frns frol from fron fros frot frou frsm frso frst frum frun fsfo fsln fssf ft-l ftos ftrs ftsr fuff fufu full fuls fulu fumo fums funf funs funt fuor fur- furl furm furn furo furr furs furt fuso fuss fust fusu futo futs futu lfmr lfts llll llms lloo lmfm lmln lmmr lmms lmno lmnt lmrs lmsr lnfs lnso lntm lnts loff lofn loft loll lolo lols lomm lomo loms lomu lono lonr lons lont loof lool loom loon loor loos loot lorn loro lors loso loss lost lotl loto lotr lots lott loul loum loun lour lous lout louu lrmt lron lrrr lrsm lrst lrts ls-r lsof lson lsso lssr lsts ltns ltnt ltrs ltsr lttr luff luft lufu lull lulu lumo lums lunn luno luns lunt lurs lurt luso luss lust luts mfor mfou mfrs mftf mlnr mlrs mlss mltr mmff mmmm mmms mmor mmrf mmst mmsu mmts mmun mmus mnls mnos mntn moff mofo mofu moll moln molo molr mols molt momo moms momu mon- monn mono mons mont monu mool moon moor moos moot morf morl morn moro mors mort moru moso moss most mosu motl motm moto mots mott motu mouf moul moun mour mous mout mrln mrls mrml mron mrsl mrtm mrtn mrts mrtt msff msfs msft msml msmm