| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been a [noun sg] since | 23 |
|
| 2 | have been a [noun] since | 23 |
|
| 3 | have been a [noun] since | 17 |
|
| 4 | has been a [noun] since | 12 |
|
| 5 | had been a [noun] since | 6 |
|
| 6 | have been an [noun] since | 6 |
|
