dddd ddss dfds dfrf dfri didi dids didu dif- diff difs diii diis dilf dili dill dils dird dirl dirr dirs dis- disd disi diss dius dlii dlil dlis dlrs drif dril drrs drui drus druu dsdr dsif dsls dsri dsrr dssi dudd duds dudu duff dufu duid duif duil duir duis duli dull dulu duri duru dusi duul duur fdlr ffff ffii ffrr ffss fidf fids fiff fifi fiii fiil fild fili fill fils firs fisd fisi fiss fisu fldr flid flii flis flud fluf flur flus frid fril fris fsfi fssf fudd fudi fuff fufu fuid fuil fuir fuli full fuls fulu fur- furi furl furr furs fusd fusi fuss fusu idid idil idir idis idli idls idrf idsf idss idus ifid ifil ifis ifrf ifri iiii iiis iirs iisd iisi iisr iisu ilir ilis ill- illd illi ills ilud ilus irds irfu iri- irid iril iris irri irrs irsf irul irus isds isil isis isls isri issf issi issr isss issu isus iuds iuiu iusd iuss ldif ldls ldrs lfrd lidl lids liff lifl liii liir liis lili lill lils lilu lird liri lirl lirr lirs liru lisd lisi liss lisu liuf lius llds llll llud lrdd lrds lrif lrrr ls-r lsds lsid lssr ludd ludi luff lufu luif luis luli lull lulu lurd luri lurs lusi luss rfdi rfds rffl rfid ridd ridi rids riff rifs rifu riif riis rill rilu riri rirs risd risi riss risu rius rlds rlif rlls rrif rrrr rsdd rsdl rsds rsid rsis rssl rudd rudi rudl ruds ruff ruid ruif ruis rull rurd ruri rurs ruru rusi russ rusu ruud s-ii sdds sdif sdls sdrs sdsf sdsl sdss sdsu sfls sfss sfsu sidd sidi sidr sids siff sifl sifr sifu sil- sild silf sili sill sils silu sirf siri sirr sirs siru sisd sisi siss sisu siui sius sl-i slds slid slir slrs slsu slud slur srfi sris srsd ssdd ssdf ssfl ssid ssis ssri ssrl ssrs sssf sssi ssss sudd sudi suds suf- suff sufi sufr sufs sufu suid suir suis sul- suld sulf suli sull sulu sur- surd surf suri surr surs suru sus- susd susi suss susu suus uddi udds udid udir udsd udsl uirr uisd ulli ullr ulul ulus urds urdu urff urfi urif uris uriu urls urri ursi urss ursu urur urus usdf usdl usds usfi usfl usfs usif usis uslu ussf ussr usss ussu usui usul usus uulu uuri uusi uuuu