dddd ddss ddts dfds dfdt dfrf dfri dftr dfts didi dids dif- diff difs diii diis dilf dili dill dils dird dirl dirr dirs dirt dis- disd disi diss dist diti dits ditt dlii dlil dlis dlit dlrs dlst drif dril drit drrs dsdr dsif dsls dsri dsrr dssi dsst dsts dtrl dtss 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 fiti fits fitt fldr flid flii flis flit flts frid fril fris frit frst fsfi fssf ft-l ftdi ftii ftrs ftsr idid idil idir idis idli idls idrf idsf idss idts ifid ifil ifis ifit ifrf ifri iiii iiis iiit iirs iisd iisi iisr iist iitr iitt ilir ilis ilit ill- illd illi ills illt ilts irds iri- irid iril iris irri irrs irsf irtf irti irts isds isil isis isit isls isri issf issi issr isss istd isti istr ists itif itil itis itll itrf itri itrs itsf itsi ittf ldif ldls ldrs lfrd lfts lidl lids liff lifl lift liii liir liis lili lill lils lilt lird liri lirl lirr lirs lirt lisd lisi liss list litd liti litl litr lits litt llds llll lrdd lrds lrif lrrr lrst lrts ls-r lsds lsid lssr lsts ltds ltrs ltsi ltsr lttr rfdi rfds rffl rfid ridd ridi rids riff rifs rift riif riis rill riri rirs risd risi riss rist riti ritl rits ritt rlds rldt rlif rlls rrif rrrr rsdd rsdl rsds rsid rsis rssl rsts rtdt rtls rtlt rtss rtts s-ii sdds sdif sdls sdlt sdrs sdsf sdsl sdss sfls sfss sfts sidd sidi sidr sids siff sifl sifr sift siit sil- sild silf sili sill sils silt sirf siri sirr sirs sirt sisd sisi siss sist sit- sitd siti sits sitt sl-i slds slft slid slir slit slrs slst slts srfi sris srsd srtr ssdd ssdf ssfl ssid ssis ssit sslt ssri ssrl ssrs sssf sssi ssss sstd sstl ssts stds stid stif stil stir stis stit stld stlt strd stri strs stsf stsi stss sttd sttr tdff tdil tdis tdls tdri tdss tfrs tfsd tfsi tfss tidd tids tiff tift tiit tild till tilr tils tilt tird tiri tirl tirr tirs tisi tiss tist titi tits titt tldr tlli tlrs trfd trfr tri- trif tril tris trit trsd trsi trst trtr tsfl tsid tsis tssf tssi tssr tsst tsts ttff ttss tttt