| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | had known [prep] [noun] | 40 |
|
| 2 | had [verb] [prep] year | 33 |
|
| 3 | had [vb pp] [prep] year | 33 |
|
| 4 | [verb] known [prep] year | 23 |
|
| 5 | have known [prep] year | 23 |
|
| 6 | [vb past] known [prep] year | 7 |
|
| 7 | had know [prep] year | 6 |
|
