| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] was [prep] [be] | 2003 |
|
| 2 | [noun sg] was [prep] [be] | 1628 |
|
| 3 | system [be] [prep] [be] | 40 |
|
| 4 | system be [prep] [be] | 40 |
|
| 5 | system [was/were] [prep] [be] | 15 |
|
| 6 | system was [prep] [be] | 11 |
|
| 7 | system was [prep] [be] | 11 |
|
