-ous dddd ddot ddss ddts dod- dodd dodo dods dood door doos doot dord doro dorr dors dort doru doso doss dost dotd doto dots dott doud dour dous dout drod drot drou drrs drus drut druu dsdr dsos dsrr dsst dsto dsts dtor dtot dtss dudd dudo duds dudu duo- duos duro durt duru dust duts duur duut oddd odds odoo odor odos odot odou odso odts odtu odur odus oooo ooos oord oort oost oots oous ordo ords ordu oro- oror oros orot orro orrs orso orsu orto orts orus osoo osor osos osrd osro ossd osso ossu ostr osts oto- otoo otor otos otro otrs otso otsu otto otts ottu otur otus ouds our- ouro ours ourt ousd oust out- outo outs ouu- rdos rdso rodd rodo rods rood roor roos root roro rort roru roso ross rost roto rotr rots rott roud rous rout rrrr rsdd rsds rsos rsts rstu rtdt rtss rtts rudd rudo ruds rurd ruro rurs ruru ruso russ rust rusu ruto ruts rutt rutu ruud s-os sdds sdot sdrs sdss sdsu sodd sodo sods sodu sood soor soos soot sord soro sorr sors sort soru soso soss sost soto sots sotu soud sour sous sout sros srsd srtr ssdd ssot ssrs ssss sstd ssts stds stod stoo stor stos stot stou strd stro strs stru stss sttd sttr stud stur stus stut sudd sudo suds suor suos sur- surd suro surr surs surt suru sus- susd suso suss sust susu suto sutu suus tdor tdss todd todo tods todt todu tood toor toos toot tord toro torr tors tort toru toso toss tost tosu totd toto totr tots tott tour tous tout trod troo tros trot trou trsd trst trtr trud trus trut truu tsos tsou tssr tsst tsts ttss tttt tudu tuor tuos turd turo turr turs turt turu tusd tuss tust tuto tuts tutt tutu tuuo udds udoo udos udot udsd udts uor- urds urdu uro- uroo urso urss ursu urts urur urus urut usdo usds usdt usos ussr usss usst ussu usto usts usus utor utto uttu uuuu