| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | had known | 1028 |
|
| 2 | have known | 923 |
|
| 3 | 'd known | 335 |
|
| 4 | 've known | 303 |
|
| 5 | have known | 275 |
|
| 6 | to have known | 116 |
|
| 7 | has known | 109 |
|
| 8 | 's known | 58 |
|
| 9 | having known | 24 |
|
| 10 | 've known | 11 |
|
