hhhhh ho-ho ho-oh honno honor hoorn hopon hoppo horno horon horro n-p-n nnooo no-no no-op nohno nohor nonno nonoh nonop noron norro oh-oh ohorn onoon onorn onpop ooooh ooooo opoho oppon ornon orono p-n-p phon- phono phrop po-on po-po ponor poopo popon popop poppo porn- porno poro- poron porro prohn proor prop- propn propp propr rhoon ro-ro ronno rprop