ffff ffrr ffun flom flon floo flor flou fluf flum fluo flur fmno fnuf fofo foll folo folr fomo fono foof fool foom foon for- forl form forn foro forr foul foun four frmn frol from fron frou frum frun fuff fufu full fulu fumo funf fuor fur- furl furm furn furo furr lfmr llll lloo lmfm lmln lmmr lmno loff lofn loll lolo lomm lomo lomu lono lonr loof lool loom loon loor lorn loro loul loum loun lour louu lron lrrr luff lufu lull lulu lumo lunn luno mfor mfou mlnr mmff mmmm mmor mmrf mmun moff mofo mofu moll moln molo molr momo momu mon- monn mono monu mool moon moor morf morl morn moro moru mouf moul moun mour mrln mrml mron muff mufu mull mulm mulo mulu mumm mumo mumu munn muno munu muon murl murn muro murr muru nfff nfon nmff nmml nmon nnnn nolf noll nolo nom- nomo nomu non- nonn nono nonu noo- nool noon nooo noor nor- norf norm norn noro norr noul noun nour nrml nron nrrl nuff null numm numu nunn nuno nuon nurl nurn nurr nuru off- offo offr offu ofml ofno ofor ollo olmo olof olom olon olor olur omn- omo- omon omoo omor omro omul omuo onlf onno onon onor onur ooff oolo oooo orff orfu orlo orlu ormn ormo orno oro- orof orom oron oror orro orum ouff oulu oun- our- ourn ouro ouu- rffl rlml rmll rmon roff rofl rofo rolf roll rolm rolo romm romo rono roof rool room roon roor roro roru rouf roul roum roun rrrr rrum rrun ruff rufo rull rulo ruml rumm rumo runf runn runo ruro ruru ruun ullo ullr ulmo ulmu ulno ulo- ulul ulum umff ummo umno umol umor unlf unmr unno unon unrf unro unum uofl uofm uofo uoml uomo uor- urff uro- urol urom uroo urum urun urur uulu uuno uuuu