| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | is [vb pp] [prep] [noun] | 16453 |
|
| 2 | which is [vb pp] [prep] | 3681 |
|
| 3 | which is [prep] [noun] | 469 |
|
| 4 | which is [vb pp] [noun] | 37 |
|
