Pì āu put uân-tûn guân-im (ing-gú: close back unrounded vowel) hi̍k-tsiá Ko āu put oân-tûn bió-im (ing-gú: high back unrounded vowel)[1] sī tsi̍t-kuá kháu-gú lāi-té sú-iōng ê tsi̍t-tsióng guân-im. Kok-tsè im-piau lāi-té tāi-piáu tsit-ê im ê hû-hō sī ⟨ɯ⟩. Teh pâi-pán tíng-kuân sī kā ⟨m⟩ jī-bú tńg-kuè-lâi ê ⟨ɯ⟩, khó-lū-tio̍h ⟨ɯ⟩ hām jī-bú ⟨u⟩ sóo tāi-piáu ê siañ-im kuan-hē, ⟨ɯ⟩ ē-tàng hông jīm-uî sī ka-siōng ke-tsi̍t-ê "uáñ-kong (u)" ê ⟨u⟩.
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