firish firmus fissi- frisii fruish fuisum fumish furfur furrfu hi-fis hififi huh-uh huishu humhum humiri humism hummum hummus hurius hurumu hushih hussif imirim immiss imuris irmish ismism isurus mifumi mirihi mirish mirrhs mirrus miruru mirush mishmi misisi misius missir missis missus miurus mm-hmm muhuhu muhurr muhuru murium murmir murmur mushir musiri musius musmus mussum musuri muumuu rfhrhs rififi rimush rirumu rishis ruffus rumish russus shihhi shiism shimri shirif shirrs shirui shirur shishi shisui shiurs shruff shshsh shursh shusui siiiii simiri simisi simris simsim simsir siriri sirius sirris sirsir sishui sisisi smiris smurfs sssfrs sufism sumisu summum sumuru surimi sursum surumi surumu sushis susumu susurr uffish uh-huh uhhuhs um-hum umirim urushi usiris ussuri