-ous bbbb bbbs bbpr bbrg bggs bkpg bkpr bksp bobb bobo bobs bobu bogg bogo bogs boko boks boku boob boog book boop boor boos bopp bops bor- borg bork boro borr bors boru bosk boso boss bosu bouk boup bour bous bpsu brkb brob brog brok broo bror bros brou brrr brrs brsb brsr brug brup brus bsgs bsos bspp bspr bsup bubb bubo bubs bubu bugg bugo bugs bukk buko buku bups bur- burb burg burk buro burp burr burs buru busk buss busu buus gbbo gbbs gggg ggpo ggss gkrp gobo gobs gogo gogs goku goog gook goop goor goos gopo gops gopu gorb gorg goro gorp gorr gors goso goss gosu gou- goug gouk goup gour gous gpgp gpos gprp gprs gpsg gpso gpss grbr grob grog grok groo grop gror gros grou grps grrr grrs grss grub grug grur grus gskb gsos gsur gubb gubs gubu gugb gugg gugu guos gups gurb gurg gurk guro gurr gurs guru gusb guss guus k-os kbbb kbbg kbbk kbbo kbbr kbbs kbbu kbgb kbgg kbgo kbgr kbkb kbkg kbkk kbko kbkr kbob kbok kboo kbos kbpg kbpk kbpo kbpr kbps kbpu kbrb kbrg kbrk kbro kbru kbsb kbsg kbsk kbso kbsr kbss kbsu kbub kbuk kbup kbur kbus kbuu kgbb kgbr kggg kggo kggr kgks kgor kgos kgou kgpg kgpr kgrb kgrg kgrk kgro kgrr kgrs kgso kgsp kgsr kgus kkbb kkbg kkbo kkbr kkbs kkgb kkgo kkgr kkkk kkob kkoo kkor kkpk kkps kkrb kkrk kkro kkrr kkrs kksp kksr kkss kksu kkup kkus kkuu kobb kobk kobo kobr kobs kobu kogb kogg kogo kogu kokb kokk koko kokp kokr koks koku koob koog kook kooo koop koor koos koou kopb kopp kopr kops kopu korb korg kork koro korr kors koru kos- kosb kosg koso kosp kosr koss kosu koub kour kous kouu kpbb kpbg kpbr kpbs kpgb kpgg kpgr kpgs kpkk kpkr kpob kpok kpoo kpop kpou kppk kppo kppp kppr kprb kprg kprk kpro kprp kprr kprs kpru kpso kpsp kpsu kpub kpug kpur kpus krbb krbg krbk krbr krgs krkk krko krkr krks krku krob krog krok kroo krop kror kros krpr krps krpu krrb krrg krrk krro krrr krrs krsk krsr krss krsu krug kruk krup krur ksbp ksbr ksbs ksgg ksgr ksgu kskb kskg kskk ksko kskr ksks ksku ksob ksok ksoo ksop ksor ksos ksou kspb kspg kspk kspo kspr ksps ksrb ksrg ksro ksrp ksrr ksrs ksso kssr ksss kssu ksub ksug ksup ksuu kubb kubo kubr kubs kubu kugb kugo kugr kugs kukk kuks kuku kuok kuoo kuop kuos kupb kupr kups kupu kurb kurk kuro kurr kurs kuru kusb kusg kuso kusp kusu kuub kuuk kuur kuuu obbo obkb obok obor obos obro obsr obss obus ogb ogog ogou ogpu ogro ogus okgo okko okok okor okpo okro okso okur okus ooku oooo ooos oops oous opkg opo- opor opos oppo opps opsu opus orbb orbo orbs orbu orgo orgs orko oro- orok oror oros orps orro orrs orsk orso orsu orub orup orus osbp osku osoo osor osos osro ossb osso ossu oubs our- ouro ours ouu- pbpk pbrs pbsp pgou pgpu pgss pgup pkgs pobo pobs pogg pogo pogs poko poku pook poop poor poos pop- popo popp pops porb porg pork poro porr pors posb posk poso poss pouk poup pour pous ppos pppo pppp ppps ppru ppss ppur prbs prgs pro- prob prog proo prop pros prou prps prrs prso prss prus pruu psbr psgr psos psou pspp pspr psps psrk psrp psso pubs pubu pugo pugs pugu puku pups pupu pur- purb purg puro purp purr purs puru pusk puss rbbb rbbr rbbs rbsp rbss rkos rkss rob- robb robo robs robu rogg rogo rokk roko rokr roks roku roob roog rook roop roor roos ropo rops rork roro roru roso rosp ross roub rouk roup rous rpgs rpob rpos rpps rrrr rrsp rsgb rsos rspb rspk rspo rsps rubb rubp rubs rubu rugg rugs rukk ruku ruok rupp ruro rurp rurs ruru rusk ruso russ rusu s-os sbbs sbor sbrk sbsp sbus sggg sggs sgps sgro sgss skog skop skor skpo skss skup skur sobo sobp sobr sobs sobu sogo sogs sokk soko soku soog sook soop soor soos sopo sopp sops sopu sorb sorg soro sorr sors soru soso soss souk soup sour sous spgb spkr spok spoo spop spor spos spps spro sprs spso spsp spss spug spur spus srgb sros srps srsp srub ssbr ssgs ssop sspo ssps ssrg ssrs sssb ssss sub- subb subg subo subs sug- sugg sugo suks suku suor suos sup- supo supp supr sups sur- surg suro surp surr surs suru sus- susk suso susp suss susu suus u-rp ubbo ubos uggo uggs ugos ugro ugur uguu ukko ukok ukps uksg ukup ukur uor- upgo upor upos uppp uppu upup urbs urgu uro- urok uroo urpo urso urss ursu uruk urup urur urus us-k usbr usbs usgo usgp usog usos uspo uspp usps ussb ussr usss ussu usus uuuu