| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | i do understand | 46 |
|
| 2 | i do understand | 41 |
|
| 3 | i [vb base] understand | 41 |
|
| 4 | i [vb past] understand | 5 |
|
| 5 | i did understand | 5 |
|
