| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | was [verb] [prep] [noun] | 32312 |
|
| 2 | was [vb pp] [prep] [noun] | 28449 |
|
| 3 | [be] based [prep] [noun] | 1458 |
|
| 4 | be based [prep] [noun] | 1458 |
|
| 5 | [was/were] based [prep] [noun] | 298 |
|
| 6 | was base [prep] [noun] | 199 |
|
