-ous bbbb bbbs bblb bbls blls blob blom bloo blou blss blub blum blur blus bmus bobb bobo bobs bobu boll bolm bolo bols bolu bomb boms bomu boob bool boom boor boos bor- borm boro borr bors boru bosm boso boss bosu boul boum bour bous brls brob brol brom broo bror bros brou brrm brrr brrs brsb brsr brum brus bsms bsos bsrm bssm bubb bubo bubs bubu bulb bull buls bulu bum- bumb bums buol bur- burb burl burm buro burr burs buru buss busu buus lblr lbms lbos lbrs llbs llll llms lloo lmbo lmmr lmms lmrs lmsr lob- lobb lobo lobs loll lolo lols lomb lomm lomo loms lomu loob lool loom loor loos loro lors loso loss loul loum lour lous louu lrrr lrsm ls-r lsbu lsso lssr lubs lull lulu lumb lumo lums lurs luso luss mbbs mbms mbou mbrs mbsl mbus mlrs mlss mmmm mmms mmor mmsu mmus mobb mobo mobs moll molo molr mols momo moms momu moob mool moor moos morb morl moro mors moru moso moss mosu moul mour mous mrbb mrbm mrbs mrls mrml mrsl msmb msml msmm msms msmu msol msor msrb mssm mssr msus mubo mubs mull mulm mulo mulu mumm mumo mums mumu muos murl muro murr murs muru musl muso muss musu obbo obls oblu obol obor obos obro obsr obss obus olbo ollo olmo olms olom olor olos olur ombo ombu omo- omoo omor omro omul omuo omus oolo ooms oooo ooos oous orbb orbo orbs orbu orlo orlu ormo oro- orom oror oros orro orrs orso orsu orub orum orus oslo osm- osmo osoo osor osos osro ossb osso ossu osul osum oubs ouls oulu our- ouro ours ouu- rbbb rbbr rbbs rbms rbsl rbss rlls rlml rlms rmbs rmll rob- robb robo robs robu roll rolm rolo romb romm romo roms roob rool room roor roos roro roru roso ross roub roul roum rous rrrr rrum rsml rsos rssl rsum rubb rubs rubu rull rulo rumb ruml rumm rumo rums ruro rurs ruru ruso russ rusu s-os sbbs sbml sbor sbus sllm slmm slob sloo slos slrs slsu slub slum slur smls smol smos smss smur smus sobo sobr sobs sobu soll solo solr sols somb soml somm somo sool soom soor soos sorb sorm soro sorr sors soru soso soss soul soum sour sous sros srub ssbr ssml ssrl ssrm ssrs sssb sssm ssss sub- subb subl subm subo subs sul- sull sulm sulo sulu sum- sumo sums sumu suor suos sur- suro surr surs suru sus- suso suss susu suum suus ubbo ublo ubls ubos ullo ullr ulmo ulmu ulo- ulos ulul ulum ulus umb- umbo ummo umms umol umor umsu umus uoml uomo uor- urbs urls uro- urol urom uroo urso urss ursu urum urur urus usbl usbr usbs uslu usmm usms usos ussb ussr usss ussu usul usus uulu uuuu