-ous bbbb bbbs bmus bobb bobo bobs bobu bomb boms bomu boob boom boor boos booz bor- borm boro borr bors boru borz bosm boso boss bosu boum bour bous bozo brob brom broo bror bros brou broz brrm brrr brrs brsb brsr brum brus bruz bsms bsos bsrm bssm bubb bubo bubs bubu bum- bumb bums bur- burb burm buro burr burs buru burz buss busu buus buuz buzz bzou bzzz mbbs mbms mbou mbrs mbus mmmm mmms mmor mmsu mmus mobb mobo mobs momo moms momu moob moor moos morb moro mors moru moso moss mosu mour mous mozo mozu mrbb mrbm mrbs mroz msmb msmm msms msmu msor msrb mssm mssr msus mubo mubs mumm mumo mums mumu muos muro murr murs muru muso muss musu muzo muzz obbo obor obos obro obsr obss obus ombo ombu omo- omoo omor omro omuo omus ooms oooo ooos oous orbb orbo orbs orbu ormo oro- orom oror oros oroz orro orrs orso orsu orub orum orus orzo orzu osm- osmo osoo osor osos osro ossb osso ossu osum oubs our- ouro ours ouu- ouzo rbbb rbbr rbbs rbms rbss rmbs rob- robb robo robs robu romb romm romo roms roob room roor roos rooz roro roru roso ross roub roum rous rouz rozz rrrr rrum rsos rsum rubb rubs rubu rumb rumm rumo rums ruro rurs ruru ruso russ rusu s-os sbbs sbor sbus smos smrz smss smur smus smzb sobo sobr sobs sobu somb somm somo soom soor soos sorb sorm soro sorr sors soru soso soss soum sour sous soz- sros srub srzu ssbr ssrm ssrs sssb sssm ssss sub- subb subm subo subs subz sum- sumo sums sumu suor suos sur- suro surr surs suru sus- suso suss susu susz suum suus suzo suzu suzz szob szss szur ubbo ubos umb- umbo ummo umms umor umsu umus uomo uor- urbs uro- urom uroo urso urss ursu urum urur urus uruz usbr usbs usmm usms usos ussb ussr usss ussu usus uuuu uzos z-ro zbus zmub zobo zomb zomo zoo- zoom zoos zorb zoro zors zoso zoss zozo zozu zsss zsum zubo zubr zubu zumo zuoz zurb zurr zuru zuzu zzzs zzzz