ffff ffii fiff fifi fifo fiii fiil fili fill filo flii floo flou floy fluf fluo fluy flyi fofo foil foli foll folo foly foof fool foul foyl fuff fufu fuil fuli full fulu fuyl fuyu fyfi fyli iffy ifil ifyo iiii iiio iioi iioo ilio ill- illi illo illy iloo iluy ioii ioio iolo ioof iooi iooo iuiu liff lifl lifo liii lili lill lilo lilu lily lio- liuf liyl liyu llll lloo loff lofi loif loiu loli loll lolo loly loof lool loui loul louu luff lufu luif luli lull lulu luyi lyff lyfy lyif lyly lyo- lyyf off- offo offu offy oiii oily oiyl olio olli ollo olly olof olyf ooff oofy oolo oooo ouff ouii oulu ouu- oyly oyou ulli ullo ully ulo- ulul uofl uofo uulu uuuu yiff yili yill ylli yoff yoli yoll yolo yoly yoof yool youf youi youl yoyo yuff yufu yuli yulo yulu yuyu yyff yyyy