-itis bbuss bdubs bibbs bibis bibri bibus biddu bidri bidup bidur bipib birds birdu birrs birst birts birur bitis bitit bitru bitti bitts bitup bpips bridi brids brisb brisi briss brist brits britt brrrr brud- bruds bruis bruit bruiu bruri bruss brust bssid btr-d btr-t btstu budds buddu budur buird buist burbs burdi burds burps burri burrs burru burst burts burtt burud burus burut busir bussu busti busts busur busut busuu butid butis butit butts butut d-bus dbtss ddddd dibri diddu didit didst didup didus dipus dirts disir diss- dist- disti distr disur ditib dittd ditti dprts dpsir dpubs dribs dridu drips dript driss drubs druid drupi druri drust dubbi dubbs dubi dubti dubus duist duits dupri duris durst durtu dussi dusti dusts dutsi i-bid ibbur ibdis ibids idist idris idrus iiiii iiris iisir iitti ipiti ipsi- ipsus ipubi irbid irbis irbit irid- irids iris- iriss irisu irrit irssi irupi is-is isbut isisi isiti isits isitt ispsd ispup isrib issid issru issus issuu istud istup istus isuus itbit itdid itisi itrip itsit itsup itsus ittti itu-d itu-r itu-t ituri ituru itutu iupps iuput pbist piiri piisi piisu pipid pipis pipit pippi pipri pirri pirui pirus pissi pisti pitip pitis pitri pitrs pitru pitti pitts piuri piuru piusi priis priit priss prist priti pritt prius prudi pruss pssst pssts ptprb ptprd ptprr ptprs ptprt ptpru pubis pudur pudus puids puits pupri purdi puris purrs purus putid putis putit putt- putti putts puttu putup puuri puurs ribbi ribup riisu ripit ripup rirpu risps rissp risti risus risut ritsu ritts ritus rrsps rsust rubbi rubid rubis rubup rubus rudds rudus ruiru rupit rupsi russi rusts rustu ruutu s-bus s-iii sibir sibiu sibsu sibur sibut siddi sidis sidri sidus siirt sipid sipit sippi sipsi sipti siptu siris siriu sirsi sirud sirup sirur sisid sisis sissi sissu sists sitit sitsi sitti situp situs siudi siuri siuru siusi siutu spir- spirr spirt spiss spiti spits sprit sprut spuds spurr spurs spurt sputs srprb sruti ssdrs sssrb sssss stib- stibb stiir stips stirp stirs stirt stitt strbp strib strid strip strit strrs strub strui strut stu-i stubs studd studs stuid stuir stupp stups sturb sturt stuss stutd subbu subis subss subst subud sudds sudis sudur suibu suids suist suits supps supsd supsi supts supur suput surds surdu surir suris surpu surti surtr surud surui surur surus susus sutri suttu suudu tbird tbsps tbtbt tbutt ti-ti tibbi tibbs tibbu tibur tidst tidus tipis tipit tippi tippu tipup tiris tirit tirrs tirru tirur tisis tisri tiss- tissi tissu tisur titii titis titti titup titus tppts tri-d tribs tribu triip tripi tripp trips tript tris- triss trist trit- trits tritt trubs trubu trudi truis truit trups trupt truss trust truus tsdsi tsuru tsuur ttttt ttusb tubbs tubi- tubri tudur tuits tupis tuppi turbi turbt turds turid turit turps turri tursi turss turst tursu turtu turup turut tussi tutsi tutti tutus tuubi tuudi tuuri tuuru u-bit u-dub ubirr ubisi ubris udupi uibis uispp uitti upput urbis urist urris ursid ursus urubu uruit ururi urusi uruti urutu uspid uspis ustup ustur usurp ususi usutu utrdb uttur uturu uusis uuuuu