| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun sg] [vb past] [be] in [noun] | 104 |
|
| 2 | [noun sg] [verb] [be] in operation | 25 |
|
| 3 | [noun] [vb past] [be] in operation | 9 |
|
| 4 | [noun sg] [vb past] [be] [prep] operation | 8 |
|
