-ous dddd ddot ddpo ddps ddss ddts dfds dfdt dfrf dftr dfts dod- dodd dodo dods doff dood doof doop door doos doot dopo dopp dopr dops dopt dord dorf doro dorp dorr dors dort doru doso doss dost dotd doto dots dott doud douf doup dour dous dout dpdt dpos dpsd dpst dpsu dpts drod drof drop drot drou drrs drsp drup drus drut druu dsdp dsdr dsos dspf dsps dspt dsrp dsrr dssp dsst dsto dsts dtdp dtor dtot dtss dttp dudd dudo duds dudu duff dufu duo- duos dupo duro durt duru dust dutp duts duur duut fdos fdot fdst ffff ffps ffrr ffss fftf fofo food foof foos foot fopp fops for- ford foro forr fors fort foso foss fost foto fotp fots fott foud foup four fous fout fpdt fprf frop fros frot frou frpd frps frso frst fsfo fspf fssf fssp ftop ftos ftps ftrs ftsr fudd fuff fufu fuor fur- furo furr furs furt fusd fuso fuss fust fusu futo futs futu oddd odds odoo odop odor odos odot odou odrp odso odts odtu odur odus ofdr off- offo offr offs offu ofor ofst oftp ofus ooff oofs oooo ooos oops oord oort oost ootp oots oous opds opo- opor opos oppo opps opsu opto opts opus ordo ords ordu orff orfs orfu oro- orof oror oros orot orps orro orrs orso orsu orto orts orup orus osoo osor osos osrd osro ossd osso ossu ostr osts otfp oto- otof otoo otor otos otpp otro otrs otso otsu otto otts ottu otur otus ouds ouff our- ouro ours ourt ousd oust out- outo outs ouu- pdfs pdos pdpr pdrs pdsd pdss pfff pffr pfft pfps pod- podd podo pods podu poff pood poof poop poor poos poot pop- popo popp pops popt poro porr pors port poso poss post potd potf poto pots pott potu poud pouf poup pour pous pout ppds ppod ppos pppd pppo pppp ppps pprf ppru ppsf ppss ppts pptt ppur prfs pro- prod prof proo prop pros prot prou prpd prps prrd prrs prsd prso prss prtp prtr prud pruf prus prut pruu psdp psdr psds psfs psos psou pspp pspr psps psrd psrp psso psst psts pstu ptop ptpd ptrd ptrf ptsd pudo puds pudu puff puft pups pupu pur- puro purp purr purs puru pusd puss pust put- puto puts putt putu rdos rdso rfds rodd rodo rods roff rofo rood roof roop roor roos root ropo rops roro rort roru roso rosp ross rost roto rotr rots rott roud rouf roup rous rout rpdp rpof rpos rpps rptd rpts rrrr rrsp rsdd rsds rsos rspo rsps rstp rsts rstu rtdt rtps rtss rttp rtts rudd rudo rudp ruds ruff rufo ruft rupp rupt rurd ruro rurp rurs ruru ruso russ rust rusu ruto ruts rutt rutu ruud s-os sdds sdot sdpr sdps sdrs sdsf sdss sdsu sfor sfos sfpd sfro sfss sfsu sftp sfts sodd sodo sods sodu sofo soft sood soof soop soor soos soot sopd sopo sopp sops sopu sord soro sorr sors sort soru soso soss sost soto sotp sots sotu soud souf soup sour sous sout spdf spdp spdr spdt spfs spod spoo spop spor spos spot sppd sppf spps sprd spro sprs spsd spso spsp spss spst spto sptr spts spud spur spus sput sros srps srpt srsd srsp srtp srtr ssdd ssdf ssdp ssfp ssop ssot sspf sspo ssps sspt ssrs sssf ssss sstd sstp ssts stds stfu stod stof stoo stop stor stos stot stou stpd stpf stpp stps strd stro strs stru stsf stss sttd sttr stud stuf stup stur stus stut sudd sudo suds suf- suff sufr sufs sufu suor suos sup- supo supp supr sups supt sur- surd surf suro surp surr surs surt suru sus- susd suso susp suss sust susu suto sutu suus tdff tdor tdss tfot tfpt tfrs tfsd tfss tftp todd todo tods todt todu toff tofo toft tofu tood toof toor toos toot top- topd topf topo topp tops topt topu tord torf toro torp torr tors tort toru toso toss tost tosu totd toto totr tots tott toup tour tous tout tpdf tpdu tppd tppp tppr tprs tptp tptr tput trfd trfr trod troo trop tros trot trou trpp trps trsd trst trtr trud trus trut truu tsop tsos tsou tspo tsps tspt tssf tssr tsst tsts tsup ttff ttop ttss tttt tudu tuff tufo tuft tufu tuor tuos tupo tups tupu turd turf turo turp turr turs turt turu tusd tuss tust tuto tuts tutt tutu tuuo u-rp udds udoo udop udos udot udpd udsd udts ufos uftp uofo uor- updf updo upor upos uppp uppu upto upup urds urdu urff urft uro- uroo urpo urso urss ursu urts urup urur urus urut usdf usdo usdp usds usdt usfs usos uspo uspp usps ussf ussr usss usst ussu usto ustp usts usus utfo utor utpd utto uttu uutf uuuu