| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] a [noun sg] [pron] [modal v] | 2023 |
|
| 2 | [prep] [noun sg] [pron] [modal v] know | 19 |
|
| 3 | a [noun sg] [pron] [modal v] know | 16 |
|
