-ous bbbb bbbs bmop bmpt bmts bmus bobb bobo bobs bobu bomb bomp boms bomt bomu boob boom boop boos boot bopp bops bosm boso boss bost bosu botb boto bots bott boum boup bous bout bpms bpot bpsu bsms bsmt bsos bspp bssm bsts bsup btbp btob btps btss bttb btus bubb bubo bubs bubu bum- bumb bump bums bups buss bust busu but- buto buts butt buus mbbs mbms mbou mbps mbus mmmm mmms mmpu mmst mmsu mmts mmus mobb mobo mobs momo moms momu moob moop moos moot mopp mops moso moss most mosu motb motm moto mots mott motu moup mous mout mppp mpps mpst mptp msmb msmm msms msmu msop mspb mspp mssm mssp msst mstp msts msus mtbo mtbs mtom mtss mtst mtts mubo mubs mumm mumo mump mums mumu muos mups muso muss must musu muto muts mutt mutu muut obbo obos obot obss obst obts obus ombo ombu omo- omoo omps ompt omuo omus ooms oooo ooos oops oost ootb ootp oots oous opms opo- opos oppo opps opsm opsu opto opts opus osbp osm- osmo osoo osos ospm ossb osso ossu osts osum otbs oto- otoo otos otpp otso otsu otto otts ottu otus oubs oust out- outb outo outs ouu- pbsp pmmp pmmu pmos pmpm pmpo pmts pmut pobo pobs pomo pomp poms pomu poop poos poot pop- popo popp pops popt posb poso poss post poto pots pott potu poum poup pous pout ppms ppos pppo pppp ppps ppss ppts pptt psbt psos psou pspp psps pssm psso psst psts pstu ptmp ptms ptop pubs pubu pump pups pupu puss pust put- puto puts putt putu s-os sbbs sbot sbsp sbst sbus smos smot smps smsp smss smtp smtu smus smut sobo sobp sobs sobt sobu somb somm somo soom soop soos soot sopo sopp sops sopu soso soss sost sotm soto sotp sots sotu soum soup sous sout spms spmt spoo spop spos spot spps spso spsp spss spst sptb spto spts spus sput ssop ssot sspo ssps sspt sssb sssm ssss sstb sstp ssts stbs stmp stms stmt stob stom stoo stop stos stot stou stpp stps stsm stss stub stum stup stus stut sub- subb subm subo subs sum- sumo sump sums sumu suos sup- supo supp sups supt sus- suso susp suss sust susu suto sutu suum suus t-mo tbbs tbsp tbst tbtp tmos tmou tmps tmsp tmtt tobo tobs tobt tobu tomb tomm tomo tomp toms tomt toom toos toot top- topo topp tops topt topu tosb toso toss tost tosu totm toto tots tott toum toup tous tout tpms tpmt tppp tptp tput tsmp tsob tsom tsop tsos tsou tspo tsps tspt tssm tsst tstm tsts tsum tsup ttbb ttms ttop ttss tttt tubb tubo tubs tubu tumb tump tums tumu tuos tupo tups tupu tusm tuss tust tuto tuts tutt tutu tuum tuuo ubbo ubos umb- umbo ummo umms umps umsp umsu umts umus umut uomo upos uppp uppu upto upup usbs usmm usmp usms usos uspo uspp usps ussb usss usst ussu ustb ustm usto ustp usts usus utmb utmp utto uttu uuuu