| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] [vb -s] be [prep] | 1264 |
|
| 2 | [noun] be operating [prep] | 90 |
|
| 3 | [noun] [vb -s] be operating | 25 |
|
| 4 | [vb -s] be operating [prep] | 24 |
|
