A lot of Chinese finals are spelled differently in the context of other letters. For example, uei, uen, and iou are often spelled ui, un, and iu after an initial. But if there is no initial to begin the syllable, u becomes w and i becomes y instead!
| Final Sound | Alternate spelling |
|---|---|
| uei | 对 duì 喂 wèi |
| uen | 伦敦 lúndūn 问 wèn |
| iou | 牛奶 niúnǎi 有 yǒu |