ho-hum ho-jun hohoho homony honjoo honomu hoohoo hoopoo hop-up hopnpp huh-uh humhum hummum hunnum hyojun hypho- hypno- hypnum jhonny johnno johnny jonnop joojoo jopoun jouhou joypop jujo jumpon jumpup junjun junoon juppon jyouou mm-hmm mohuhu mompyn monjon monyon moomoo moopoo mop-up mophun muhuhu mujono munmyo munyon muumuu mymymy myohmy myomo- nomnom nomoon non-no non-op nonono nonoon noonoo nounou nuh-uh nymph- nympho ohmymy ohnono ohohoh ohpooh onhuno oohooh oomphy oooooo oupoyo ouyoun oynoun phono- phonon phunom pomoun pompom pompon ponyup poopoo pop-up popjoy popopo popoyo poppop poupon poupou pppppp pumpon pumpup punpun pynoun pynyon uh-huh um-hum unh-uh unhoop unhunh unu-op upjohn uponon uppony yo-pop yohoho yonyou yoohoo youpon yoyoyo yujo yumyum