f-hour foofoo foofur foorth foorum forhoo formo- forout forrot forth- fortum foufou four-h fourof fourou fourth fourto frumth furfur furour furrfu furtho furtum futuro h-hour ho-hum hohhot hohoho hoohoo hooroo hororo horror hortor hotfor hotoff hotoro hottot houtou htruth huh-uh huhhot humhot humhum hummum humour hurroo hurth hurumu huthur huthut mm-hmm moffom moffou mohoro mohout mohuhu mommur moomoo mormor mormur moroto morrot mothur motmot motomu motor- motoro motour moturu mourou mrmoto muffro muhuhu muhurr muhuru murmur muroto muthur mutomo muttur mutufu mutuum muumuu offutt oftfor ohohoh ohotmu ohtomu ohtoto oofotr oohooh oomoto oooooo oromoo orrho- orrour ortho- otmoor ottoor outfor outour outtro romour roomth roomto rootof rotour rotout rotrou rottum routot ruhroh rumohr rumour rurutu rutour t-form t-room tfromt thoro- thourt thouth thromm throut thruff to-fro toform tohoro tommot tomort tomtom tomtor toohot tootoo torfou tororo toroth tortor tortou tortum totoro totrot tou-fu touhou tourou toutou toutuo trotro tumour tumtum tuotuo turmut turrum turtur tururu tutour tuttut u-form uh-huh um-hum umhofo urform utouth utroor