| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | which [modal v] [be] very [adj] | 60 |
|
| 2 | which [modal v] [be] very [adj] | 58 |
|
| 3 | [pron] [modal v] [be] very useful | 35 |
|
| 4 | which [modal v] [be] [adv] useful | 12 |
|
| 5 | which [modal v] [be] very useful | 6 |
|
