| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | had previously | 903 |
|
| 2 | has previously | 197 |
|
| 3 | have previously | 195 |
|
| 4 | having previously | 79 |
|
| 5 | 'd previously | 16 |
|
| 6 | have previously | 11 |
|
| 7 | 've previously | 10 |
|
| 8 | to have previously | 7 |
|
