O͘
O͘ sī Bân-lâm-gí Pe̍h-oē-jī lāi-bīn ê chi̍t ê te̍k-sû ê jī-bó, tī jī-bó “o” kha-chiah-āu ka-thiam hô͘-lô͘-tiám (Unicode U+0358 ͘), tha̍k chò /ɔ/.
O͘ bô-hoat-tō͘ hō͘ chin chē chok-gia̍p hē-thóng chi-oān, éng-éng siá chò o· (ka-thiam tiong-kan-tiám), o• (ka-thiam hāng-bo̍k hû-hō), oo ia̍h-sī ou.
Le̍k-sú
siu-kái19 sè-kí tiong-kî lâi Ē-mn̂g thoân-kàu ê Elihu Doty hoat-bêng chia jī-bó, iōng-lâi khu-pia̍t /o/ and /ɔ/, /o/ siá chò “o”, /ɔ/ siá chò “o͘”, í-āu hō͘ chin chē lâng iōng. Carstairs Douglas tī 1873 nî siá ê Bân-lâm-gí sû-tián lāi-bīn, chiong “o͘” kái chò “ø͘”, m̄-kò kin-á-ji̍t bô lâng chhiūⁿ hit-khoán iōng.
Siaⁿ-tiāu
siu-kái- O͘ o͘ (tē 1 tiāu)
- Ó͘ ó͘ (tē 2 tiāu)
- Ò͘ ò͘ (tē 3 tiāu)
- Ô͘ ô͘ (tē 5 tiāu)
- Ō͘ ō͘ (tē 7 tiāu)
- O̍͘ o̍͘ (tē 8 tiāu)