-ous bbbb bbbs bmus bobb bobo bobs bobu boko boks boku bomb boms bomu boob book boom boor boos booz bor- bork borm boro borr bors boru borz bosk bosm boso boss bosu bouk boum bour bous bozo brkb brob brok brom broo bror bros brou broz brrm brrr brrs brsb brsr brum brus bruz bsms bsos bsrm bssm bubb bubo bubs bubu bukk buko buku bum- bumb bums bur- burb burk burm buro burr burs buru burz busk buss busu buus buuz buzz bzou bzrk bzzz k-os kbbb kbbk kbbm kbbo kbbr kbbs kbbu kbbz kbkb kbkk kbko kbkr kbkz kbmb kbmo kbmr kbms kbob kbok kboo kbos kboz kbrb kbrk kbro kbru kbrz kbsb kbsk kbsm kbso kbsr kbss kbsu kbsz kbub kbuk kbur kbus kbuu kbuz kbzm kbzo kbzs kbzu kbzz kkbb kkbo kkbr kkbs kkbz kkkk kkmk kkmo kkmr kkms kkob kkoo kkor kkoz kkrb kkrk kkro kkrr kkrs kkrz kksm kksr kkss kksu kkus kkuu kkzu kkzz kmbr kmbs kmbz kmkk kmko kmks kmkz kmmk kmmm kmmo kmmr kmms kmmz kmob kmok kmom kmor kmou kmoz kmrb kmro kmrr kmrs kmsb kmso kmsr kmss kmsu kmur kmus kmuz kmzk kmzo kmzr kmzu kmzz kobb kobk kobo kobr kobs kobu kokb kokk koko kokr koks koku kokz komb komo komr koms koob kook kooo koor koos koou kooz korb kork koro korr kors koru kos- kosb koso kosr koss kosu kosz koub koum kour kous kouu kozb kozk kozo kozr kozu krbb krbk krbm krbr krbz krkk krko krkr krks krku krkz krmb krmo krmr krms krob krok krom kroo kror kros kroz krrb krrk krrm krro krrr krrs krrz krsk krsr krss krsu kruk krum krur kruz krzk krzr krzs krzz ksbr ksbs ksbz kskb kskk ksko kskr ksks ksku kskz ksmb ksmm ksmo ksmr ksms ksmu ksob ksok ksom ksoo ksor ksos ksou ksrb ksrm ksro ksrr ksrs ksrz kssm ksso kssr ksss kssu kssz ksub ksum ksuu kszr kubb kubo kubr kubs kubu kukk kuks kuku kumm kumo kumr kumu kuok kuoo kuos kurb kurk kurm kuro kurr kurs kuru kurz kusb kuso kusu kuub kuuk kuur kuuu kuuz kuzu kuzz kzbb kzbk kzbr kzbs kzbz kzkr kzks kzkz kzmk kzmu kzmz kzoo kzor kzoz kzrb kzrk kzrm kzro kzrr kzrs kzrz kzsb kzsu kzum kzus kzuu kzuz kzzb kzzk kzzo kzzr kzzs kzzz mbbs mbms mbou mbrs mbus mkks mksm mmmm mmms mmor mmsu mmus mobb mobo mobs moko momo moms momu moob mook moor moos morb mork moro mors moru mosk moso moss mosu mouk mour mous mozo mozu mrbb mrbm mrbs mrkr mroz mruk msmb msmm msms msmu msor msrb mssm mssr msus mubo mubs muko mumm mumo mums mumu muos murk muro murr murs muru musk muso muss musu muzo muzz obbo obkb obok obor obos obro obsr obss obus okko okmo okok okom okor okro okso okur okus ombo ombu omo- omoo omor omro omsk omuo omus ooku ooms oooo ooos oous orbb orbo orbs orbu orko ormo oro- orok orom oror oros oroz orro orrs orsk orso orsu orub orum orus orzk orzo orzu osku osm- osmo osoo osor osos osro ossb osso ossu osum oubs our- ouro ours ouu- ouzo rbbb rbbr rbbs rbmk rbms rbss rkos rkss rmbs rob- robb robo robs robu rokk roko rokr roks roku romb romk romm romo roms roob rook room roor roos rooz rork roro roru roso ross roub rouk roum rous rouz rozz rrkm rrrr rrum rsos rsum rubb rubs rubu rukk ruku rumb rumm rumo rums ruok ruro rurs ruru rusk ruso russ rusu s-os sbbs sbor sbrk sbus skor skss skum skur smkb smok smos smrk smrz smss smur smus smzb sobo sobr sobs sobu sokk soko soku somb somm somo sook soom soor soos sorb sorm soro sorr sors soru soso soss souk soum sour sous soz- sros srub srzu ssbr ssrm ssrs sssb sssm ssss sub- subb subm subo subs subz suks suku sum- sumo sums sumu suor suos sur- suro surr surs suru sus- susk suso suss susu susz suum suus suzo suzu suzz szob szss szur ubbo ubos ukko ukok ukum ukur umb- umbo ummo umms umok umor umsu umus uomo uor- urbs uro- urok urom uroo urso urss ursu uruk urum urur urus uruz us-k usbr usbs usmm usms usos ussb ussr usss ussu usus uuuu uzos z-ro zbus zmub zobo zoku zomb zomo zoo- zook zoom zoos zorb zork zoro zors zoso zoss zouk zozo zozu zsss zsum zubo zubr zubu zuko zukr zumo zuoz zurb zurr zuru zuuk zuzu zzzs zzzz