-ous bbbb bbbs bbpr bmop bmpt bmts bmus bobb bobo bobs bobu bomb bomp boms bomt bomu boob boom boop boor boos boot bopp bops bor- borm boro borr bors bort boru bosm boso boss bost bosu botb boto bots bott boum boup bour bous bout bpms bpot bpsu brob brom broo bror bros brot brou brrm brrr brrs brsb brsr brst brum brup brus brut bsms bsmt bsos bspp bspr bsrm bssm bsts bsup btbp btob btor btps btrt btss bttb btus bubb bubo bubs bubu bum- bumb bump bums bups bur- burb burm buro burp burr burs burt buru buss bust busu but- buto buts butt buus mbbs mbms mbou mbps mbrs mbus mmmm mmms mmor mmpr mmpu mmrp mmst mmsu mmts mmus mobb mobo mobs momo moms momu moob moop moor moos moot mopp mops morb moro mors mort moru moso moss most mosu motb motm moto mots mott motu moup mour mous mout mppp mpps mpro mprp mpst mptp mrbb mrbm mrbs mrps mrtm mrts mrtt msmb msmm msms msmu msop msor mspb mspp msrb msrp msrt mssm mssp mssr msst mstp mstr msts msus mtbo mtbs mtom mtor mtrr mtss mtst mttr mtts mubo mubs mumm mumo mump mums mumu muos mups muro murr murs murt muru muso muss must musu muto muts mutt mutu muut obbo obor obos obot obro obsr obss obst obts obus ombo ombu omo- omoo omor omps ompt omro omuo omus ooms oooo ooos oops oort oost ootb ootp oots oous opms opo- opor opos oppo opps opsm opsu opto opts opus orbb orbo orbs orbu ormo oro- orom oror oros orot orps orro orrs orso orsu orto orts orub orum orup orus osbp osm- osmo osoo osor osos ospm osro ossb osso ossu ostr osts osum otbs oto- otoo otor otos otpp otro otrs otso otsu otto otts ottu otur otus oubs our- ouro ours ourt oust out- outb outo outs ouu- pbmr pbrs pbsp pmbr pmmp pmmu pmos pmpm pmpo pmrs pmrt pmts pmut pobo pobs pomo pomp poms pomu poop poor poos poot pop- popo popp pops popt porb poro porr pors port posb poso poss post poto pots pott potu poum poup pour pous pout ppms ppos pppo pppp ppps pprm ppru ppss ppts pptt ppur prbs pro- prob prom proo prop pros prot prou prps prrm prrs prso prss prtm prtp prtr prum prus prut pruu psbr psbt psos psou pspp pspr psps psrp pssm psso psst psts pstu ptmp ptms ptop pubs pubu pump pups pupu pur- purb puro purp purr purs puru puss pust put- puto puts putt putu rbbb rbbr rbbs rbms rbsp rbss rbst rmbs rmrp rmsp rmst rmtu rob- robb robo robs robt robu romb romm romo romp roms roob room roop roor roos root ropo rops roro rort roru roso rosp ross rost roto rotr rots rott roub roum roup rous rout rpms rpob rpos rpps rpts rrmp rrrr rrsp rrum rsos rspb rspo rsps rstp rsts rstu rsum rtmp rtms rtps rtss rttp rtts rubb rubp rubs rubu rumb rumm rumo rump rums rumt rupp rupt ruro rurp rurs ruru ruso russ rust rusu ruto ruts rutt rutu s-os sbbs sbor sbot sbsp sbst sbus smos smot smps smrt smsp smss smtp smtu smur smus smut sobo sobp sobr sobs sobt sobu somb somm somo soom soop soor soos soot sopo sopp sops sopu sorb sorm soro sorr sors sort soru soso soss sost sotm soto sotp sots sotu soum soup sour sous sout spms spmt spoo spop spor spos spot spps sprm spro sprs spso spsp spss spst sptb spto sptr spts spur spus sput sros srps srpt srsp srtp srtr srub ssbr ssop ssot sspo ssps sspt ssrm ssrs sssb sssm ssss sstb sstp ssts stbs stmp stms stmt stob stom stoo stop stor stos stot stou stpp stps stro strs stru stsm stss sttr stub stum stup stur stus stut sub- subb subm subo subs sum- sumo sump sums sumu suor suos sup- supo supp supr sups supt sur- suro surp surr surs surt suru sus- suso susp suss sust susu suto sutu suum suus t-mo tbbs tbrb tbsp tbst tbtp tmbr tmos tmou tmps tmro tmsp tmtt tobo tobs tobt tobu tomb tomm tomo tomp toms tomt toom toor toos toot top- topo topp tops topt topu torm toro torp torr tors tort toru tosb toso toss tost tosu totm toto totr tots tott toum toup tour tous tout tpms tpmt tppp tppr tprs tptp tptr tput trmb trms trmu trom troo trop tros trot trou trpm trpp trps trst trtr trub trus trut truu tsmp tsob tsom tsop tsos tsou tspo tsps tspt tssm tssr tsst tstm tsts tsum tsup ttbb ttms ttop ttss tttt tubb tubo tubr tubs tubu tumb tump tums tumu tuor tuos tupo tups tupu turb turm turo turp turr turs turt turu tusm tuss tust tuto tuts tutt tutu tuum tuuo u-rp ubbo ubos umb- umbo ummo umms umor umps umsp umsu umts umus umut uomo uor- upor upos uppp uppu upto upup urbs uro- urom uroo urpo urso urss ursu urts urum urup urur urus urut usbr usbs usmm usmp usms usos uspo uspp usps ussb ussr usss usst ussu ustb ustm usto ustp usts usus utmb utmp utor utto uttu uuuu