b-room bbbbbb bo-hoo bobbos bohush bombom bombur bombus bomhus bomohs booboo boohoo boom-o boorus borbor bormus boromo bororo bosoms bososo bossom bossou boubou bourou bousso boussu bousum bromo- bromos bromus brooms brosso brubru brumus brusor bububu buhsum bumboo burbur burhou burosh burros bushsr bussh- bussho bussum h-bomb h-hour hbombs ho-hum hohoho hohums hommos hommus hoohoo hooroo hororo horror hossur houmus housos hrrors hubbub hubrus hububb huh-uh humhub humhum hummum hummus humors humour humous hurroo hurumu hushom mbombo mbomou mhorrs mm-hmm mohoro mohuhu mommur moomoo mooshu morbus mormor mormos mormur moroso moross morous morros morsum mososo mossoo mouros mourou mousum muhuhu muhurr muhuru murmur mushom musmus mussum muumuu obosom obsorb ohhush ohohoh ombro- oohooh oooooo orobus oromoo orrho- orrour osburh osmous osommo ossous ououso ousrou rhomb- rhombs rhosus rhumbs robomb robous romoos romour roshor rossum rubro- rubrum ruhroh rumbur rumohr rumors rumour russo- russus rusumo shboom shmoos shoosh shroom shroub shrubs shshsh shursh smohor smoosh sobos sohmor sohouo sombor soomro soosoo sorbus sorors sorous sorrus sorsor sorsum sourou sousou suburb summum sumoom sumoor sumuru suroso sursum surumu susumu susurr ubombo ubussu uh-huh uhhuhs um-hum umbuss urhobo urobos usbhub