b-room bbbbbb bhutto bo-hoo bogoro bombom bombur booboo boogum boohoo boom-o borbor borogo boromo bororo borugh boruth bothr- bothum botoro bottom boubou bought bougou bourgh bourou bourth boutob brohug bromo- broogh brotto brough brubru brught brutto brutum btooth bububu bugbug bugout bumboo bumout burbot burbur burgoo burgor burgum burhou burotu burutu butbro buttto buutuo ghumot go-out gobbur goboom gogbot gogoro gohort googoo gooroo gorgor gothot gotour gotout gourou goutum gromth grooth grotto grough grouth grugru gthumb gubgub gurbru gurgum gurugu guthro gutrot guttur h-bomb h-hour hhgttg ho-hum hogoro hohhot hohoho hoohoo hooroo horgr hororo horror hortor hotbot hotoro hottot hottub houtou htruth hubbub hububb huh-uh huhhot humbug humhot humhub humhum hummum humour huoguo hurroo hurth hurumu huthur huthut mbombo mbomou mm-hmm mobutu mogoro mohoro mohout mohuhu mommur moogoo moomoo morbut mormor mormur morogo moroto morrot mothur motmot motomu motor- motoro motour moturu mought mougth mourou mrmoto muggur muggut mugumu muguru muhugu muhuhu muhurr muhuru murmur muroto muthur mutomo muttur mutuum muumuu obourg obturb ohohoh ohotmu ohtomu ohtoto ombro- oohooh oomoto oooooo oromoo orrho- orrour ortho- ortug otmoor ottoor outour outtro rhobtb rhogog rhomb- robo-g robomb roboto romour roogoo roomth roomto rotgut rotour rotout rotrou rottum rought routot rubbot rubout rubro- rubrum rubutu ruhroh rumbur rumohr rumour rurutu rutour t-room thgttg thoght thogur thorgh thoro- though thourt thouth thromb thromm throut thrugh thrumb thught thurbo thurgh toboot togout togrog tohoro tomhog tommot tomort tomtom tomtor toohot tootoo torgot torgut tororo toroth tortor tortou tortum totoro totrot tougbo tought touhou tourou toutou toutuo troggu troght trombo trotro trough trumbo tuborg tugrug tumour tumtum tuotuo turbo- turbot turgor turgot turgut turmut turrum turtur tururu tutour tuttut u-boot ubombo uh-huh um-hum umboth umbuth urhobo urughu utouth utroor