| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | which [vb -s] often be [vb pp] | 11 |
|
| 2 | which [vb -s] often [be] [vb pp] | 11 |
|
| 3 | which [vb -s] often been [vb pp] | 10 |
|
| 4 | which [vb -s] often [been] [vb pp] | 10 |
|
