-ous bbbb bbbs bbrg bggs bgst bobb bobo bobs bobu bogg bogo bogs bogt boob boog boor boos boot bor- borg boro borr bors bort boru boso boss bost bosu botb boto bots bott bour bous bout bovo brob brog broo bror bros brot brou brrr brrs brsb brsr brst brug brus brut bruv bsgs bsos bsts bstv btob btor btrt btss bttb btus bubb bubo bubs bubu bugg bugo bugs bur- burb burg buro burr burs burt buru buss bust busu but- buto buts butt buus gbbo gbbs ggbt gggg ggss gobo gobs gogo gogs goog goor goos goot gorb gorg goro gorr gors gort goso goss gost gosu goto gots gott gotv gou- goug gour gous gout govs govt grbr grob grog groo gror gros grot grou grov grrr grrs grss grub grug grur grus grut gsos gstr gsur gtbr gtos gubb gubs gubu gugb gugg gugu guos gurb gurg guro gurr gurs gurt guru gusb guss gust guto guts gutt gutu guus guvs gvtv gvvv obbo obor obos obot obro obsr obss obst obts obus obvs ogb ogog ogou ogro ogus oooo ooos oort oost ootb oots oous orbb orbo orbs orbu orgo orgs oro- oror oros orot orro orrs orso orsu orto orts orub orus orvr orvs osoo osor osos osov osro ossb osso ossu ostr osts otbs oto- otog otoo otor otos otov otro otrs otsg otso otsu otto otts ottu otur otus oubs our- ouro ours ourt oust out- outb outo outs ouu- ovo- ovoo ovot rbbb rbbr rbbs rbss rbst rgtr rgts rob- robb robo robs robt robu rogg rogo roob roog roor roos root roro rort roru roso ross rost rotg roto rotr rots rott roub rous rout rovo rovs rrrr rsgb rsos rsts rstu rtgs rtss rtts rubb rubs rubu rugg rugs ruro rurs ruru ruso russ rust rusu ruto ruts rutt rutu ruvu s-os s-vt sbbs sbor sbot sbst sbus sggg sggs sgro sgss sgsv sgts sobo sobr sobs sobt sobu sogo sogs soog soor soos soot sorb sorg soro sorr sors sort soru soso soss sost sosv soto sots sotu sour sous sout sovo sovs sovu srgb sros srtr srtv srub ssbr ssgs ssgt ssot ssrg ssrs sssb ssss sstb ssts st-v stbs stgr stob stog stoo stor stos stot stou stro strs stru stss sttr stub stug stur stus stut stuv stvs sub- subb subg subo subs sug- sugg sugo suor suos sur- surg suro surr surs surt suru surv sus- suso suss sust susu suto sutu suus suvs svor svrg svtr tbbs tbgs tbrb tbst tgts tobo tobs tobt tobu togo togr togs togt toor toos toot torg toro torr tors tort toru torv tosb toso toss tost tosu toto totr tots tott toug tour tous tout touv tovo trog troo tros trot trou trst trtr trub trug trus trut truu trvs tsgt tsob tsos tsou tssg tssr tsst tsts ttbb ttss tttt tubb tubo tubr tubs tubu tugg tugs tugu tuor tuos turb turg turo turr turs turt turu tuss tust tuto tuts tutt tutu tuuo tvbs tvos tvro tvrr tvss tvtv ubbo ubos uggo uggs uggt ugos ugro ugur uguu uor- uovo urbs urgu uro- uroo urso urss ursu urts urur urus urut usbr usbs usgo usog usos usov ussb ussr usss usst ussu ustb usto usts usus utor utto uttu utug uuuu uv-b uvvu vbrg vogt vogu voog voor voot vor- voro vors vort voru voso voss vosu voto vour vous vout vrot vrto vsto vtrs vugg vugo vugs vurb vurg vurt vutv vvob vvog vvsb vvvv