| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | is [prep] be [adj] | 424 |
|
| 2 | which is [prep] be | 198 |
|
| 3 | which is [prep] [adj] | 144 |
|
| 4 | which [prep] be [adj] | 12 |
|
