ghugus go-gos gogoro gogosh googoo gooroo gorgor gorgus gosour gossos gourou gromos grooms grosso grough grugru guoshu gurgum gursum gurugu gusgus gushhr h-hour ho-hum hogoro hohoho hohums hommos hommus hoohoo hooroo horgr hororo horror hossur houghs houmus housos hrrors huh-uh humhum hummum hummus humors humour humous huoguo hurroo hurumu hushom mhorrs mm-hmm mogoro mogrus mohoro mohuhu mommur moogoo moomoo mooshu mormor mormos mormur morogo moroso moross morous morros morsum mososo mossoo mouros mourou mousum muggur mugumu muguru muhugu muhuhu muhurr muhuru murmur musgum mushom musmus mussum muumuu ogusur ohgosh ohhush ohohoh oohooh oooooo oromoo orrho- orrour osmous osommo ossous ououso ousrou rhogog rhosus romoos romour roogoo roshor rossum roughs rougso rugous ruhroh rumohr rumors rumour russo- russus rusumo shmoos shoghu shoosh shough shrogs shroom shrugs shshsh shursh smogus smohor smoosh sohmor sohouo soomro soosoo sorgho sorgou sorors sorous sorrus sorsor sorsum soughs sourou sousou sshogg ssurgo suguru summum sumoom sumoor sumuru suroso sursum surumu susumu susurr uh-huh uhhuhs um-hum urughu