ho-hum hohhot hohoho honomu honton hoohoo hoopoo hooton hop-up hopnpp hopout hopton hotnot hotpot hotton hottot houton houtou huh-uh huhhot humhot humhum hummum hunnum hunton huthut hutton mm-hmm mohout mohuhu monnot monont monton montot moomoo moopoo mop-up mophun moptop motmot motomu motoun motton mottun mounth mouton muhuhu munton mutomo mutton mutuum muumuu n-toon nomnom nomoon nomoto nomtom non-no non-op nonhot nonono nonoon noonoo noonto notho- nothot nothum notout notton nottoo nounou ntuntu nuh-uh nunton nupont ohnono ohohoh ohotmu ohpooh ohtomu ohtoto ompton onhuno onupto oohooh oomoto oooooo optout output outtop phono- phonon photo- photon phunom pomoun pompom pompon ponton poopoo pop-up popopo popout poppop poptop potton pottop pottum poupon poupou pppppp pumpon pumpup punpun pupput pupton put-on put-up putout putput puttoo thonon thoppu thouth to-on to-put tommot tomono tomont tompon tompot tomtom ton-up tonmun tonono tonpon tonton toohot tootoo top-up topout toppop topton tot-up totopo touhou touton toutou toutuo tummon tumtum tuntum tuotuo tupton tutton tuttut uh-huh um-hum umount unh-uh unhoop unhunh unu-op up-put uponon uptono utouth