-ous oooo ooos oops oort oost ootp oots oous opo- opor opos oppo opps opsu opto opts opus oro- oror oros orot orps orro orrs orso orsu orto orts orup orus osoo osor osos osro osso ossu ostr osts oto- otoo otor otos otpp otro otrs otso otsu otto otts ottu otur otus our- ouro ours ourt oust out- outo outs ouu- poop poor poos poot pop- popo popp pops popt poro porr pors port poso poss post poto pots pott potu poup pour pous pout ppos pppo pppp ppps ppru ppss ppts pptt ppur pro- proo prop pros prot prou prps prrs prso prss prtp prtr prus prut pruu psos psou pspp pspr psps psrp psso psst psts pstu ptop pups pupu pur- puro purp purr purs puru puss pust put- puto puts putt putu roop roor roos root ropo rops roro rort roru roso rosp ross rost roto rotr rots rott roup rous rout rpos rpps rpts rrrr rrsp rsos rspo rsps rstp rsts rstu rtps rtss rttp rtts rupp rupt ruro rurp rurs ruru ruso russ rust rusu ruto ruts rutt rutu s-os soop soor soos soot sopo sopp sops sopu soro sorr sors sort soru soso soss sost soto sotp sots sotu soup sour sous sout spoo spop spor spos spot spps spro sprs spso spsp spss spst spto sptr spts spur spus sput sros srps srpt srsp srtp srtr ssop ssot sspo ssps sspt ssrs ssss sstp ssts stoo stop stor stos stot stou stpp stps stro strs stru stss sttr stup stur stus stut suor suos sup- supo supp supr sups supt sur- suro surp surr surs surt suru sus- suso susp suss sust susu suto sutu suus toor toos toot top- topo topp tops topt topu toro torp torr tors tort toru toso toss tost tosu toto totr tots tott toup tour tous tout tppp tppr tprs tptp tptr tput troo trop tros trot trou trpp trps trst trtr trus trut truu tsop tsos tsou tspo tsps tspt tssr tsst tsts tsup ttop ttss tttt tuor tuos tupo tups tupu turo turp turr turs turt turu tuss tust tuto tuts tutt tutu tuuo u-rp uor- upor upos uppp uppu upto upup uro- uroo urpo urso urss ursu urts urup urur urus urut usos uspo uspp usps ussr usss usst ussu usto ustp usts usus utor utto uttu uuuu