dddd ddss ddts dfds dfdt dfrf dfri dftr dfts didi dids didu dif- diff difs diii diis dilf dili dill dils dird dirl dirr dirs dirt dis- disd disi diss dist diti dits ditt dius dlii dlil dlis dlit dlrs dlst drif dril drit drrs drui drus drut druu dsdr dsif dsls dsri dsrr dssi dsst dsts dtrl dtss dudd duds dudu duff dufu duid duif duil duir duis duit duli dull dult dulu duri durt duru dusi dust duts duul duur duut fdlr fdst fdti fdtl ffff ffii ffrr ffss fftf fidf fids fiff fifi fift fiii fiil fild fili fill fils firs fisd fisi fiss fist fisu fiti fits fitt fldr flid flii flis flit flts flud fluf flur flus frid fril fris frit frst fsfi fssf ft-l ftdi ftii ftrs ftsr fudd fudi fuff fufu fuid fuil fuir fuit fuli full fuls fulu fur- furi furl furr furs furt fusd fusi fuss fust fusu futi futs futu idid idil idir idis idli idls idrf idsf idss idts idus ifid ifil ifis ifit ifrf ifri iiii iiis iiit iirs iisd iisi iisr iist iisu iitr iitt ilir ilis ilit ill- illd illi ills illt ilts ilud ilus ilut irds irfu iri- irid iril iris irri irrs irsf irtf irti irts irul irus isds isil isis isit isls isri issf issi issr isss issu istd isti istr ists isus itif itil itis itll itrf itri itrs itsf itsi itsu ittf itur iuds iuiu iusd iuss iust ldif ldls ldrs lfrd lfts lidl lids liff lifl lift liii liir liis lili lill lils lilt lilu lird liri lirl lirr lirs lirt liru lisd lisi liss list lisu litd liti litl litr lits litt litu liuf lius liut llds llll llud lrdd lrds lrif lrrr lrst lrts ls-r lsds lsid lssr lsts ltds ltrs ltsi ltsr lttr ludd ludi luff luft lufu luif luis luit luli lull lulu lurd luri lurs lurt lusi luss lust luti luts rfdi rfds rffl rfid ridd ridi rids riff rifs rift rifu riif riis rill rilu riri rirs risd risi riss rist risu riti ritl rits ritt ritu rius rlds rldt rlif rlls rrif rrrr rsdd rsdl rsds rsid rsis rssl rsts rstu rtdt rtls rtlt rtss rtts rudd rudi rudl ruds ruff ruft ruid ruif ruis ruit rull rurd ruri rurs ruru rusi russ rust rusu ruti rutl ruts rutt rutu ruud s-ii sdds sdif sdls sdlt sdrs sdsf sdsl sdss sdsu sfls sfss sfsu sfts sidd sidi sidr sids siff sifl sifr sift sifu siit sil- sild silf sili sill sils silt silu sirf siri sirr sirs sirt siru sisd sisi siss sist sisu sit- sitd siti sits sitt situ siui sius siut sl-i slds slft slid slir slit slrs slst slsu slts slud slur slut srfi sris srsd srtr ssdd ssdf ssfl ssid ssis ssit sslt ssri ssrl ssrs sssf sssi ssss sstd sstl ssts stds stfu stid stif stil stir stis stit stld stlt strd stri strs stru stsf stsi stss sttd sttr stud stuf stul stur stus stut sudd sudi suds suf- suff sufi sufr sufs sufu suid suir suis suit sul- suld sulf suli sull sult sulu sur- surd surf suri surr surs surt suru sus- susd susi suss sust susu suti sutu suus tdff tdil tdis tdls tdri tdss tfrs tfsd tfsi tfss tidd tids tiff tift tiit tiiu tild till tilr tils tilt tird tiri tirl tirr tirs tiru tisi tiss tist titi tits titt titu tldr tlli tlrs trfd trfr tri- trif tril tris trit trsd trsi trst trtr trud trus trut truu tsfl tsid tsis tssf tssi tssr tsst tsts tsui ttff ttss tttt ttul tudi tudu tuff tufi tuft tufu tuil tuis tuit tuiu tuli tull tulu turd turf turi turr turs turt turu tusd tusi tuss tust tuti tutl tuts tutt tutu uddi udds udid udir udsd udsl udts uirr uisd uist uits ulft ulli ullr ulti ults ultt ulul ulus urds urdu urff urfi urft urif uris uriu urls urri ursi urss ursu urts urur urus urut usdf usdl usds usdt usfi usfl usfs usif usis uslu ussf ussr usss usst ussu usti usts usui usul usus utid util utis utri utsl utti uttu uulu uuri uusi uutf uuuu