| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] be used [prep] [noun] | 272 |
|
| 2 | could be used [prep] [noun] | 100 |
|
| 3 | could [adv] be used [prep] | 61 |
|
| 4 | could [adv] be [prep] [noun] | 49 |
|
