hhhhh ho-ho ho-oh hohol hohum hollo holo- holon holou holul holum homo- honno hoopl hopl- hopon hoppo hopup huhuh hullo hulon hulun humph huolu l-pop lmnop lohho lollo lolol lomno looph loph- lopon lopou lulom lulul lumon lupul mllon mlomp mmhmm mmmmm mohol mohon mohun molln mollo mollu molon momlu monno mono- monon mooll moolu mopup moulu mulln mullo mumlu mummu mumun muppu n-p-n nnooo no-no no-op nohno nohom nohup nommo nomo- nomom non-u nonno nonoh nonop noonu nopun nu-nu nuhuh nullo nunon nunun o-hum oh-oh ohmmm ollon ollup olomu olumu omoon omulu omupo onmun onoon onpop oomph ooooh ooooo oploo opoho oppol oppon oppum opump oullo oulon oulun p-n-p phlpp phnom phon- phono phool plomp ploop plopp plopu plouh plump plupp po-on po-po polhn pollo pollu polom polon polop pompu pomum ponnu ponup poopo popon popop poppo popup poulp puhmu pull- pullu punon puppo u-pml u-pop uh-oh uh-uh uhhoh uhhuh ulno- uloop ululu umhum unmol unnun uphol upolo upolu uppon uuuuu