dddd ddss dfds didi dids didu dif- diff difs diii diis dilf dili dill dils dis- disd disi diss dius dlii dlil dlis dsif dsls dssi dudd duds dudu duff dufu duid duif duil duis duli dull dulu dusi duul ffff ffii ffss fidf fids fiff fifi fiii fiil fild fili fill fils fisd fisi fiss fisu flid flii flis flud fluf flus fsfi fssf fudd fudi fuff fufu fuid fuil fuli full fuls fulu fusd fusi fuss fusu idid idil idis idli idls idsf idss idus ifid ifil ifis iiii iiis iisd iisi iisu ilis ill- illd illi ills ilud ilus isds isil isis isls issf issi isss issu isus iuds iuiu iusd iuss ldif ldls lidl lids liff lifl liii liis lili lill lils lilu lisd lisi liss lisu liuf lius llds llll llud lsds lsid ludd ludi luff lufu luif luis luli lull lulu lusi luss s-ii sdds sdif sdls sdsf sdsl sdss sdsu sfls sfss sfsu sidd sidi sids siff sifl sifu sil- sild silf sili sill sils silu sisd sisi siss sisu siui sius sl-i slds slid slsu slud ssdd ssdf ssfl ssid ssis sssf sssi ssss sudd sudi suds suf- suff sufi sufs sufu suid suis sul- suld sulf suli sull sulu sus- susd susi suss susu suus uddi udds udid udsd udsl uisd ulli ulul ulus usdf usdl usds usfi usfl usfs usif usis uslu ussf usss ussu usui usul usus uulu uusi uuuu