ffff ffss floo flos floy flys fofo foll folo fols foly foof fool foos foso foss foyl foys fsfo fssf llll lloo loff loll lolo lols loly loof lool loos loso loss losy loys lsof lsso lyff lyfy lyly lyo- lys- lysl lyso lyss lyyf off- offo offs offy olfs ollo olly olof olos olyf ooff oofs oofy oolo oooo ooos oslo osoo osos osso ossy oyls oyly oyss s-os sfls sfos sfss sloo slos sloy slys sofo solf soll solo sols soly soof sool soos sooy soso soss soyo soys ssfl sssf ssss syff syfy syl- syll syls syso syss ylls yoff yoll yolo yoly yoof yool yoso yoyo yyff yyyy