| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | had been [vb pp] since [noun] | 35 |
|
| 2 | had [not/n't] been [vb pp] since | 18 |
|
| 3 | had [not/n't] been [vb pp] [noun] | 12 |
|
| 4 | had [not/n't] [vb pp] since [noun] | 10 |
|
| 5 | [not/n't] been [vb pp] since [noun] | 9 |
|
