-ous bbbb bbbs bggs bgst bobb bobo bobs bobu bogg bogo bogs bogt boob boog boop boos boot bopp bops boso boss bost bosu botb boto bots bott boup bous bout bpot bpsu bsgs bsos bspp bsts bsup btbp btob btps btss bttb btus bubb bubo bubs bubu bugg bugo bugs bups buss bust busu but- buto buts butt buus gbbo gbbs ggbt gggg ggpo ggss gobo gobs gogo gogs goog goop goos goot gopo gops gopu goso goss gost gosu goto gots gott gou- goug goup gous gout gpgp gpos gpot gpsg gpso gpss gsos gspt gtop gtos gubb gubs gubu gugb gugg gugu guos gups gusb guss gust guto guts gutt gutu guus obbo obos obot obss obst obts obus ogb ogog ogou ogpu ogus oooo ooos oops oost ootb ootp oots oous opo- opos oppo opps opsu opto opts opus osbp osoo osos ossb osso ossu osts otbs oto- otog otoo otos otpp otsg otso otsu otto otts ottu otus oubs oust out- outb outo outs ouu- pbsp pgou pgpu pgss pgup pobo pobs pogg pogo pogs poop poos poot pop- popo popp pops popt posb poso poss post poto pots pott potu poup pous pout ppos pppo pppp ppps ppss ppts pptt psbt psos psou pspp psps psso psst psts pstu ptgs ptop pubs pubu pugo pugs pugu pups pupu puss pust put- puto puts putt putu s-os sbbs sbot sbsp sbst sbus sggg sggs sgps sgss sgts sobo sobp sobs sobt sobu sogo sogs soog soop soos soot sopo sopp sops sopu soso soss sost soto sotp sots sotu soup sous sout spgb spgt spoo spop spos spot spps spso spsp spss spst sptb spto spts spug spus sput ssgs ssgt ssop ssot sspo ssps sspt sssb ssss sstb sstp ssts stbs stob stog stoo stop stos stot stou stpp stps stss stub stug stup stus stut sub- subb subg subo subs sug- sugg sugo suos sup- supo supp sups supt sus- suso susp suss sust susu suto sutu suus tbbs tbgs tbsp tbst tbtp tgts tobo tobs tobt tobu togo togs togt toos toot top- topo topp tops topt topu tosb toso toss tost tosu toto tots tott toug toup tous tout tpbg tppp tptp tput tsgt tsob tsop tsos tsou tspo tsps tspt tssg tsst tsts tsup ttbb ttop ttss tttt tubb tubo tubs tubu tugg tugs tugu tuos tupo tups tupu tuss tust tuto tuts tutt tutu tuuo ubbo ubos uggo uggs uggt ugos uguu upgo upos uppp uppu upto upup usbs usgo usgp usog usos uspo uspp usps ussb usss usst ussu ustb usto ustp usts usus utto uttu utug uuuu