hhhhh ho-ho ho-oh hohot hokku hookt hopko hoppo hopto hopup hotot hotto houtu huhuh hukok hutto huttu hutup k-pop khoku khutu ko-ko kohut kokko kokot kokou kokut kotto kottu kouth kouto kukko kukok kukup kupto kutho kutkh kuttu oh-oh oh-ok okoho okpho okuku ooooh ooooo opoho opoku opto- optot optto othou otoku ototo oukup outto phot- photo photu phpht phtpp phutu po-po pokht pokot pokou poopo popop poppo popup potku potok potoo potop potto pottu puhtu puppo putt- putto puttu putuo putup t-pop t-top thoth thout thttp to-ho tohku tohot tokko toko- tokuo tookh tooth topo- topot toppo topto topup toto- totok totoo totop totup touho ttttt tuotu tupou tutku tutto u-pop uh-oh uh-uh uhhoh uhhuh upput uptop utkhu ututo uuuuu