| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been on [noun sg] since | 16 |
|
| 2 | have been on [noun] since | 16 |
|
| 3 | had been on [noun] since | 8 |
|
| 4 | have been on strike since | 5 |
|
| 5 | have been on [noun] since | 5 |
|
| 6 | have been on strike since | 5 |
|
