| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | been [noun] [noun] [prep] | 139 |
|
| 2 | be [noun] [noun] since | 13 |
|
| 3 | [be] [noun] [noun] since | 13 |
|
| 4 | [been] [noun] [noun] since | 13 |
|
