b-room bbbbbb bhutto bo-hoo bombom bombur booboo boohoo boom-o bootup borbor boromo bororo boruth bothr- bothum botoro bottom boubou bourou bourth boutob bromo- brorup brotto brubru brutto brutum btooth bububu bumboo bumout bumppo burbot burbur burhou burotu burrup burutu butbro buttto buutuo h-bomb h-hour ho-hum hohhot hohoho hoohoo hoopoo hooroo hop-up hopout hororo horror hortor hotbot hotoro hotpot hottot hottub houtou hrrmph htruth hubbub hububb huh-uh huhhot humhot humhub humhum hummum humour hurroo hurth hurumu huthur huthut mbombo mbomou mm-hmm mmmbop mobutu mohoro mohout mohuhu mommur moomoo moopoo moorup mop-up moptop morbut mormor mormur moroto morph- morpho morphu morrot mothur motmot motomu motor- motoro motour moturu mourou mpombo mrmoto muhuhu muhurr muhuru murmur muroto muthur mutomo muttur mutuum muumuu obturb ohohoh ohotmu ohpooh ohtomu ohtoto ombro- oohooh oomoto oooooo oporto optoro optout oromoo oropom orrho- orrour ortho- otmoor ottoor outour output outrup outtop outtro phobo- phobot phoro- phorum photo- phthor poboru pombur pompom poopoo pop-up popbot popopo poporo popout poppop poptop porrum portom pottop pottum poupou pppppp probot prompt proph- propho propup propur proto- prutot pumpup pupput purpur put-up puthur putour putout putput puttoo puttur rhobtb rhomb- robomb roboto romour rompth roomth roomto rootup rotour rotout rotrou rottum routot rub-up rubbot rubout rubro- rubrum rubutu ruhroh rumbur rumohr rumour rumpot ruptor rurutu rutour t-room thoppu thoro- thorup thourt thouth thromb thromm throop throut thrumb thrump thrupp thurbo to-put toboot tohoro tommot tomort tompot tomtom tomtor toohot tootoo top-up toporu topout toppop tororo toroth torpor tortor tortou tortum tot-up totopo totoro totrot touhou tourou toutou toutuo trombo trompo troph- tropo- troppo trotro troump trumbo trumph tumour tumtum tuotuo turbo- turbot turmut turrum turtur tururu tutour tuttut u-boot ubombo uh-huh um-hum umboth umbuth up-put uppoor upprop uproot urhobo uruppu utouth utroor