f-hour fluor- fluoro follum foofoo foofur foorum forhoo formo- formol foufou foulum four-h fourof fourou frollo fullof furfur furour furrfu h-hour ho-hum hohloh hohoho holhol holloo hollum holmul holoor holour hoohoo hooroo hororo horror huh-uh hulloo hullur huluhu humhum hummum humour hurroo hurumu l-form l-hour lloro lohoof lollum loloru lomlom looloo loroum loulou lourlo lufful lurulu mm-hmm moffom moffou mofolo moholl moholm mohoro mohuhu mollom molour mommur moomoo mormor mormur morolo mourou muffro muhuhu muhurr muhuru mullum mullur mulmul mulmur murmur muumuu ohohoh oohooh oooooo orloff ormolu oromoo orrho- orrour roflol roloff romolo romour romulo rouful ruhroh rumohr rumour ruurlo u-form uh-huh ulloor um-hum umhofo umurlu urform