| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] had been since | 15 |
|
| 2 | [pers pn] had [been] since | 13 |
|
| 3 | it had [been] since | 7 |
|
| 4 | it had [been] since | 7 |
|
