O Copyright © 2009 by Zhang JuLi.
o1
Typing Listing
o1 o1喔.
o2
Typing Listing
o2 o2哦.
o4
Typing Listing
o4 o4哦.
ou1
Typing Listing
ou1 ou1 欧区讴. ou2殴. ngou1鸥.
ng = [ŋ]. Tone change.
ou3
Typing Listing
ou3 ou3呕. ngou3偶藕.
ng = [ŋ].
ou4
Typing Listing
ou4 ou4沤怄.