bbbb bbbs bbhs bhhs bhms bhur bhuu bmhs bmus brhs brrm brrr brrs brsb brsr bruh brum brus bshs bsms bsrm bssm bubb bubs bubu buhr buhs bum- bumb bums bur- burb burh burm burr burs buru bush buss busu buus hbbs hbhs hbms hbrs hbss hhhh hhhs hhms hhus hmbs hmhb hmhs hmmm hmms hmsm hrhs hshs hsmm hsur hubb hubs huhs huhu humh humm hums hurr hurs huru hush huss huub huus mbbs mbhs mbms mbrs mbus mhhs mhmm mhmr mmhm mmhs mmmh mmmm mmms mmsu mmus mrbb mrbm mrbs mrhs mshb mshs msmb msmm msms msmu msrb mssm mssr msus mubs muhr muhs muhu mumm mums mumu murr murs muru mush muss musu rbbb rbbr rbbs rbhs rbms rbss rhhs rhsm rhum rhus rmbs rmhs rrhs rrrr rrum rshs rsum rubb rubs rubu ruhh ruhm ruhr ruhs rumb rumm rums rurs ruru rush russ rusu sbbs sbhs sbus shbm shbs shhh shhs shm- shrs shub shum shur shus shuu smbh smhs smsh smss smur smus srhs srub ssbr sshs ssrm ssrs sssb sssh sssm ssss sub- subb subh subm subs suhb suhr sum- sums sumu sur- surr surs suru sus- suss susu suum suus uhrs uhss uhuh umb- umhs umms umsu umus urbs urrh urss ursu urum urur urus usbr usbs ushr ushs ushu usmm usms ussb ussr usss ussu usus uuuu