| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] be [prep] [be] | 9059 |
|
| 2 | system [be] [prep] [be] | 45 |
|
| 3 | system be [prep] [be] | 45 |
|
| 4 | system be [prep] [be] | 45 |
|
