| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] was [art] [noun] | 15691 |
|
| 2 | [noun sg] was [art] [noun] | 11021 |
|
| 3 | system [be] [art] [noun] | 172 |
|
| 4 | system be [art] [noun] | 172 |
|
| 5 | system [was/were] [art] [noun] | 38 |
|
| 6 | system was [art] [noun] | 36 |
|
