dddd ddss ddts didi dids didu diii diis dili dill dils dird dirl dirr dirs dirt dis- disd disi diss dist diti dits ditt dius dlii dlil dlis dlit dlrs dlst dril drit drrs drui drus drut druu dsdr dsls dsri dsrr dssi dsst dsts dtrl dtss dudd duds dudu duid duil duir duis duit duli dull dult dulu duri durt duru dusi dust duts duul duur duut idid idil idir idis idli idls idss idts idus iiii iiis iiit iirs iisd iisi iisr iist iisu iitr iitt ilir ilis ilit ill- illd illi ills illt ilts ilud ilus ilut irds iri- irid iril iris irri irrs irti irts irul irus isds isil isis isit isls isri issi issr isss issu istd isti istr ists isus itil itis itll itri itrs itsi itsu itur iuds iuiu iusd iuss iust ldls ldrs lidl lids 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 lius liut llds llll llud lrdd lrds lrrr lrst lrts ls-r lsds lsid lssr lsts ltds ltrs ltsi ltsr lttr ludd ludi luis luit luli lull lulu lurd luri lurs lurt lusi luss lust luti luts ridd ridi rids riis rill rilu riri rirs risd risi riss rist risu riti ritl rits ritt ritu rius rlds rldt rlls rrrr rsdd rsdl rsds rsid rsis rssl rsts rstu rtdt rtls rtlt rtss rtts rudd rudi rudl ruds ruid ruis ruit rull rurd ruri rurs ruru rusi russ rust rusu ruti rutl ruts rutt rutu ruud s-ii sdds sdls sdlt sdrs sdsl sdss sdsu sidd sidi sidr sids siit sil- sild sili sill sils silt silu siri sirr sirs sirt siru sisd sisi siss sist sisu sit- sitd siti sits sitt situ siui sius siut sl-i slds slid slir slit slrs slst slsu slts slud slur slut sris srsd srtr ssdd ssid ssis ssit sslt ssri ssrl ssrs sssi ssss sstd sstl ssts stds stid stil stir stis stit stld stlt strd stri strs stru stsi stss sttd sttr stud stul stur stus stut sudd sudi suds suid suir suis suit sul- suld suli sull sult sulu sur- surd suri surr surs surt suru sus- susd susi suss sust susu suti sutu suus tdil tdis tdls tdri tdss tidd tids tiit tiiu tild till tilr tils tilt tird tiri tirl tirr tirs tiru tisi tiss tist titi tits titt titu tldr tlli tlrs tri- tril tris trit trsd trsi trst trtr trud trus trut truu tsid tsis tssi tssr tsst tsts tsui ttss tttt ttul tudi tudu tuil tuis tuit tuiu tuli tull tulu turd 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 ulli ullr ulti ults ultt ulul ulus urds urdu uris uriu urls urri ursi urss ursu urts urur urus urut usdl usds usdt usis uslu ussr usss usst ussu usti usts usui usul usus utid util utis utri utsl utti uttu uulu uuri uusi uuuu