hhhhh ho-ho ho-oh hohms hohos hohum homo- homos homps hoops hoosh hoppo hopps hopup hosho hosps hossu houss huhuh huhus humph humps humus husos husum mmhmm mmmmm momos momus moosh mopup mopus mosso mosuo muhos mummu mumps muppu mushu musos musou musso o-hum oh-oh oh-so ohmmm ohohs ohuus omupo oomph ooooh ooooo opoho oppos oppum opump osmo- osmos ososo ossos osusu ouphs phos- phoss pmpus po-po pomos pomps pompu pomum poohs poopo poops popop popos poppo popup posho poush pouss psoup puhmu pumps puppo push- shhhh shmoo shmup shoop shoos shops shosh shoup shous shush smoms smosh smous smush smuss so-ho so-so sohos sommo somos sopho sophs soppo sopup soshu soss- sosus souho soups sous- sphos spoom sposh sposo spumo ssssh sssss suhum sumos sumou sumph sumps sumup suomu supps susso susus u-pop uh-oh uh-uh uhhoh uhhuh uhohs uhuhs umhum umphs ushus uuuuu