| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] [modal v] [verb] as a useful | 7 |
|
| 2 | [noun] [modal v] [verb] as a useful | 7 |
|
| 3 | [modal v] [be] [verb] as a useful | 5 |
|
| 4 | [modal v] be [verb] as a useful | 5 |
|
| 5 | [modal v] [be] [verb] as a useful | 5 |
|
| 6 | [modal v] be [verb] as a useful | 5 |
|
| 7 | [modal v] [verb] as a useful [noun] | 17 |
|
| 8 | [modal v] [verb] as a useful [noun sg] | 17 |
|
