ffff ffii ffss fiff fifi fiii fiil fili fill fils fisi fiss fisu flii flis fluf flus fluy flyi flys fsfi fssf fuff fufu fuil fuli full fuls fulu fusi fuss fusu fuyl fuyu fyfi fyli iffy ifil ifis iiii iiis iisi iisu ilis ill- illi ills illy ilus iluy isil isis isls isly issf issi isss issu issy isus isyl isys iuiu iuss liff lifl liii liis lili lill lils lilu lily lisi liss lisu lisy liuf lius liyl liyu llll luff lufu luif luis luli lull lulu lusi luss luyi luys lyff lyfy lyif lyly lys- lysi lysl lyss lyyf s-ii sfls sfss sfsu siff sifl sifu sify sil- silf sili sill sils silu sisi siss sisu sisy siui sius siyi siyu sl-i slsu slys ssfl ssis sssf sssi ssss suf- suff sufi sufs sufu suis sul- sulf suli sull sulu sus- susi suss susu susy suus suyi suyu syff syfy syis syl- syli syll syls syss ulli ully ulul ulus ulys usfi usfl usfs usif usis uslu ussf usss ussu ussy usui usul usus uulu uusi uuuu yiff yili yill yiss ylli ylls ysii yssu yuff yufu yuli yuls yulu yuyu yyff yyyy