u. Like ou, in “You.”
ú. This is pronounced like u.
DIPHTHONGS.
Ai, ei, oi, ôi, ói. This is pronounced with a single emission of sound.
Ay, ey, oy, óy, ui, úi. This is pronounced with two emissions of sound, as, a-ï, e-ï, o-ï, u-ï, ú-ï.
Cha, ché, chi, cho, chu. This is pronounced as Tia, tié, tii, tio, tiu; with a single emission of sound.
Chha, chhé, chhi, chho, chhu. This is pronounced as Thcha, thché (etc.), with a strong aspiration.
Kha, khe, khi, kho, khu. This is pronounced as Ka, ke, ki (etc.), with a strong aspiration.
Nha, nhe, nhi, nho, nhu. This is pronounced as Nia, Nie (etc.), with a single emission of sound.
Pha, phe, phi, pho, phu. This is pronounced as pa, pe, pi (etc.), with an aspiration.