-ous bbbb bbbs bmts bmus bobb bobo bobs bobu bomb boms bomt bomu boob boom boor boos boot booz bor- borm boro borr bors bort boru borz bosm boso boss bost bosu botb boto bots bott boum bour bous bout bozo brob brom broo bror bros brot brou broz brrm brrr brrs brsb brsr brst brum brus brut bruz bsms bsmt bsos bsrm bssm bsts btob btor btrt btss bttb btus bubb bubo bubs bubu bum- bumb bums bur- burb burm buro burr burs burt buru burz buss bust busu but- buto buts butt butz buus buuz buzz bzou bzzt bzzz mbbs mbms mbou mbrs mbus mmmm mmms mmor mmst mmsu mmts mmus mobb mobo mobs momo moms momu moob moor moos moot morb moro mors mort moru moso moss most mosu motb motm moto mots mott motu motz mour mous mout mozo mozu mrbb mrbm mrbs mroz mrtm mrts mrtt msmb msmm msms msmu msor msrb msrt mssm mssr msst mstr msts msus mtbo mtbs mtom mtor mtrr mtss mtst mttr mtts mubo mubs mumm mumo mums mumu muos muro murr murs murt muru muso muss must musu muto muts mutt mutu muut muzo muzz obbo obor obos obot obro obsr obss obst obts obus ombo ombu omo- omoo omor omro omuo omus ooms oooo ooos oort oost ootb oots oous orbb orbo orbs orbu ormo oro- orom oror oros orot oroz orro orrs orso orsu orto orts orub orum orus orzo orzu osm- osmo osoo osor osos osro ossb osso ossu ostr osts osum otbs oto- otoo otor otos otro otrs otso otsu otto otts ottu otur otus oubs our- ouro ours ourt oust out- outb outo outs ouu- ouzo rbbb rbbr rbbs rbms rbss rbst rmbs rmst rmtu rob- robb robo robs robt robu romb romm romo roms roob room roor roos root rooz roro rort roru roso ross rost roto rotr rots rott roub roum rous rout rouz rozz rrrr rrum rsos rsts rstu rsum rtms rtss rtts rubb rubs rubu rumb rumm rumo rums rumt ruro rurs ruru ruso russ rust rusu ruto ruts rutt rutu s-os sbbs sbor sbot sbst sbus smos smot smrt smrz smss smtu smur smus smut smzb sobo sobr sobs sobt sobu somb somm somo soom soor soos soot sorb sorm soro sorr sors sort soru soso soss sost sotm soto sots sotu soum sour sous sout soz- sros srtr srub srzu ssbr ssot ssrm ssrs sssb sssm ssss sstb ssts stbs stms stmt stob stom stoo stor stos stot stou stro strs stru stsm stss sttr stub stum stur stus stut sub- subb subm subo subs subz sum- sumo sums sumu suor suos sur- suro surr surs surt suru sus- suso suss sust susu susz suto sutu suum suus suzo suzu suzz szob szot szss szur t-mo tbbs tbrb tbst tmbr tmos tmou tmro tmtt tobo tobs tobt tobu tomb tomm tomo toms tomt toom toor toos toot torm toro torr tors tort toru tosb toso toss tost tosu totm toto totr tots tott toum tour tous tout tozo trmb trms trmu trom troo tros trot trou trst trtr trub trus trut truu tsob tsom tsos tsou tssm tssr tsst tstm tsts tsum ttbb ttms ttss tttt tubb tubo tubr tubs tubu tumb tums tumu tuor tuos turb turm turo turr turs turt turu tusm tuss tust tuto tuts tutt tutu tuum tuuo tuzu tuzz tzum tzur tzus tzut tzzt ubbo ubos umb- umbo ummo umms umor umsu umts umus umut uomo uor- urbs uro- urom uroo urso urss ursu urts urum urur urus urut uruz usbr usbs usmm usms usos ussb ussr usss usst ussu ustb ustm usto usts usus utmb utor utto uttu uuuu uzos z-ro zbus zmub zobo zomb zomo zoo- zoom zoos zoot zorb zoro zors zort zoso zoss zots zott zotz zozo zozu zsss zsum ztst zubo zubr zubu zumo zuoz zurb zurr zuru zust zuzu zzzs zzzz