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-ous bbbb bbbs bblb bbls bffl bffs bfpo bfpp bfts bftt blbt blls blob bloo blop blot blou blsp blss blst blts blub bluf blup blus blut bobb bobo bobs bobu boff bofs bofu boll bolo bols bolt bolu boob boof bool boop boos boot bopp bops boso boss bost bosu botb boto bots bott bouf boul boup bous bout bpfl bpot bpsu bptf bsff bsfs bsos bspp bsts bsup btbp btlp btob btps btss bttb btus bubb bubo bubs bubu buff bufo bulb bull buls bult bulu buol bups buss bust busu but- buto buts butt buus fbop fbus ffff ffps ffss fftf flob floo flop flos flot flou flts flub fluf fluo flus fobs fobt fofo foll folo fols folt foof fool foos foot fopp fops fosb foso foss fost foto fotp fots fott foul foup fous fout fsfo fspf fssf fssp ft-l ftlb ftop ftos ftps ftub fubb fubs fubu fuff fufu full fuls fulu fuso fuss fust fusu futo futs futu lbos lftp lfts llbs llll lloo llps lob- lobb lobo lobs loff loft loll lolo lols loob loof lool loop loos loot lopp lops lopu loso losp loss lost lotl loto lots lott loul loup lous lout louu lpfp lpft lppl lpss lptb lsbu lsof lspl lsso lssp lsts ltbf ltbl ltps ltsp lubs luff luft lufu lull lulu lupo lupu luso luss lust luts luup obbo obls oblu obol obos obot obss obst obts obus off- offo offs offu ofst oftp ofus olbo olfs ollo olof olos olot olst oltu ooff oofs oolo oooo ooos oops oost ootb ootp oots oous opls opo- opos oppo opps opsu opto opts opus osbp oslo osoo osos ossb osso ossu osts osul otbs otfp oto- otof otoo otos otpp otso otsu otto otts ottu otus oubs ouff ouls oulu oust out- outb outo outs ouu- pblu pbsp pfff pfft pfps plff plob ploo plop plos plot plou plpp plss pltf pltt plup plus pobo pobs poff poll polo pols polt polu poof pool poop poos poot pop- popo popp pops popt posb poso poss post potf poto pots pott potu pouf poul poup pous pout pplo ppos pppo pppp ppps ppsf ppss ppts pptt psbt psfs psol psos psou pspp psps psso psst psts pstu ptbl ptol ptop publ pubs pubu puff puft pull pulo pulp puls pult pulu pupl pups pupu puss pust put- puto puts putt putu s-os sbbs sbot sbsp sbst sbus sfls sfos sfss sfsu sftp sfts slbp slft sllp slob sloo slop slos slot slpp slps slst slsu slts slub slup slut sobo sobp sobs sobt sobu sofo soft solf soll solo solp sols solt soof sool soop soos soot sopo sopp sops sopu soso soss sost sotl soto sotp sots sotu souf soul soup sous sout spfs splo splp spls spoo spop spos spot sppf spps spso spsp spss spst sptb spto spts spus sput ssfl ssfp sslp