dobl dobs dobu dod- dodd dodi dodo dods doid doil dois doit dold doli doll dolo dols dolt dolu doob dood dool door doos doot dord dori doro dorr dors dort doru dosi doso doss dost dotd doti doto dots dott doub doud doul dour dous dout drib dril drit drob drod drol drot drou drrs drub drui drus drut druu dsdr dsls dsos dsri dsrr dssi dsst dsto dsts dtor dtot dtrl dtss dub- dubb dubs dubu dudd dudo duds dudu duid duil duir duis duit duli dull dulo dult dulu duo- duos duri duro durt duru dusi dust duts duul duur duut ibdo ibid ibis ibos ibot ibrd ibri ibro ibss ibtb ibtl ibts ibus iddo idid idil idio idir idis idli idls idol idos idro idso idss idts idub iduo idus iiii iiio iiis iiit iioi iioo iios iirs iisd iisi iisr iist iisu iitr iitt ilio ilir ilis ilit ill- illd illi illo ills illt iloo ilos ilot ilts ilud ilus ilut iobi iod- iodd iodo ioii ioio ioit iolo iooi iooo ioos iori iors ioso iosu ioto ious irdo irds iri- irid iril irio iris irlb irob irod irri irrs irti irts irul irus isbd isbl isbt isdb isds isil isis isit isls iso- isol isor isos isri issi isso issr isss issu istd isti isto istr ists isus itbs itdo itil itis itll itoi itol itoo itor itos itou itri itrs itsi itso itsu itto itur iuds iuiu iusd iuss iust lbds lblr lbos lbrs lbrt ldls ldos ldrs libo libr libs libu lidb lidl lido lids liii liir liis lilb lili lill lilo lils lilt lilu lio- liod lior lios lird liri lirl liro lirr lirs lirt liru lisd lisi liso liss list lisu litb litd liti litl lito litr lits litt litu lius liut llbs lldb llds llll llod lloo llud lob- lobb lobi lobo lobs lodi lods loid loir lois loit loiu lold loli loll lolo lols loob lood lool loor loos loot lord lori loro lors losi loso loss lost lotd loti lotl loto lotr lots lott loud loui loul lour lous lout louu lrdd lrds lroi lrrr lrst lrts ls-r lsbu lsds lsid lsso lssr lsts ltbl ltds ltib ltrs ltsi ltsr lttr lubs ludd ludi ludo luis luit luli lull lulu lurd luri lurs lurt lusi luso luss lust luti luts obbo obdt obid obis obit obls oblu oboi obol obor obos obot obri obro obsd obsr obss obst obtd obts obus odbo oddd oddi odds odio odir odis odiu odoo odor odos odot odou odrl odso odts odtu odur odus oido oids oiii oils oios oirt oisd oist oisu oiti olbo oldb olds olib olid olio olis olit olli ollo olor olos olot olsi olst oltu olur oobi oodi ooid oold oolo oooo ooos oord oort oosi oost ootb oots oous orbb orbi orbo orbs orbu ordo ords ordu ori- orid oril orio oris orit orlo orlu oro- oror oros orot orri orro orrs orsi orso orsu orto orts orub orus osdi osii osis osli oslo osoi osoo osor osos osrd osro ossb ossd ossi osso ossu osti ostr osts osul otbd otbs otis otit oto- otoo otor otos otro otrs otso otsu otti otto otts ottu otur otus oubs ouds ouii ouir ouis ouit ould ouls oulu our- ouro ours ourt ousd oust out- outb outi outo outs ouu- rbbb rbbr rbbs rbds rbis rbsd rbsl rbss rbst rdio rdos rdso rib- ribo ribs ribu ridd ridi rido rids riis rill rilo rilu riol rios riot riou riri rirs risd risi riso riss rist risu riti ritl rito rits ritt ritu rius rlds rldt rlls rob- robb robi robo robs robt robu rodd rodi rodo rods roid roil roio roir rois roit roiu rold roll rolo rolt roob rood rooi rool roor roos root rori roro rort roru rosi roso ross rost roti rotl roto rotr rots rott roub roud roul rous rout rrrr rsbi rsdd rsdl rsds rsid rsis rsos rssl rsts rstu rtdt rtls rtlt rtss rtts rubb rubi rubs rubu rudd rudi rudl rudo ruds ruid ruis ruit rull rulo rurd ruri ruro rurs ruru rusi ruso russ rust rusu ruti rutl ruto ruts rutt rutu ruud s-ib s-ii s-os sbbs sbds sbor sbot sbsd sbsi sbst sbus sdds sdib sdio sdls sdlt sdot sdrs sdsl sdss sdsu sibi sibo sibs sibu sidd sidi sido sidr sids siit sil- sild sili sill silo sils silt silu siod siol sior sios siot siou siri siro sirr sirs sirt siru sisd sisi siss sist sisu sit- sitd siti sito sits sitt situ siui sius siut sl-i slds slib slid slir slit slob slod sloo slos slot slrs slst slsu slts slub slud slur slut sobo sobr sobs sobt sobu sodd sodo sods sodu soil soir sois soit sold soli soll solo solr sols solt sood sool soor soos soot sorb sord sori soro sorr sors sort soru sosi soso soss sost sotl soto sots sotu soud soul sour sous sout srib sris sros srsd srtr srub ssbr ssdd ssid ssis ssit sslt ssot ssri ssrl ssrs sssb sssi ssss sstb sstd sstl ssts stbd stbs stds stib stid stil stio stir stis stit stld stlo stlt stob stod stol stoo stor stos stot stou strd stri stro strs stru stsi stss sttd sttr stub stud stul stur stus stut sub- subb subd subi subl subo subs sudd sudi sudo suds suid suio suir suis suit sul- suld suli sull sulo sult sulu suor suos sur- surd suri suro surr surs surt suru sus- susd susi suso suss sust susu suti suto sutu suus tbbs tbil tbit tbrb tbst tddb tdil tdis tdls tdor tdri tdss tibi tibs tibu tidd tids tiit tiiu tild till tilo tilr tils tilt tios tiou tirb tird tiri tirl tiro tirr tirs tiru tisb tisi tiso tiss tist titi tito tits titt titu tldr tlli tlos tlrs tobi tobo tobs tobt tobu todd todi todo tods todt todu toid toil