Sentence Composition
| 1 | 我 | wǒ |
|
| 2 | 知道 | zhīdào |
|
| 3 | 我 | wǒ |
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| 4 | 做错 | zuòcuò | to make an error |
| =5 | 了 | le |
|
| =5 | 了 | liǎo |
| =5 | 了 | liǎo |
|
| =5 | 了 | liào | unofficial variant of 瞭 liào |