| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [det] be [art] [noun] | 21980 |
|
| 2 | system be [art] [noun] | 172 |
|
| 3 | [det] system be [art] | 21 |
|
| 4 | [det] system [art] [noun] | 15 |
|
