-itis bbuss bibbs bibis bibus bitis bitit bitti bitts bmiii btstu bttms buist bumbu bumsi bussu busti busts busum busut busuu butis butit butts butut buumi iiiii iitti imiss imits immit imust is-is isbut isisi isiti isits isitt ismus issum issus issuu istus isumi isuus itbit itisi itsit itsus ittti itu-t itutu mbuti mi-mi mibbs mimis mimmi mimms mimus mismi missi missm misti mists mitim mitis mitti mitts mitui mmiii mmmmm ms-ii msisi mt-ti mt-tm mt-tt muist mumbi mummu musis musit musti musts mustu mutis mutsu mutti mutts mutum mutus s-bus s-iii sibiu sibsu sibut simbi simbu simis simit simmi simms simum simus simut sisis sismi sissi sissu sists sitit sitsi sitti situm situs siumu siusi siutu smbus smits smitt smuss smuts ssmis sssss stib- stibb stims stitt stu-i stubs stumm stums stuss su-mi subbu subis subss subst suibu suist suits sumit summi sumti sumui sumut susus suttu sutum tbtbt tbutt ti-ti tibbi tibbs tibbu timis timit timms timus tisis tiss- tissi tissu titii titis titti titus tsumi ttttt ttusb tubbs tubi- tuism tuits tumbi tumbu tumis tumut tussi tutsi tutti tutus tuubi u-bit ubisi uibis uitti ustum ususi usutu uuism uusis uuuuu