| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | that they [vb mod] be used | 43 |
|
| 2 | that they [modal v] be used | 43 |
|
| 3 | that they can be used | 14 |
|
| 4 | that they can be used | 14 |
|
| 5 | that they could be used | 12 |
|
| 6 | that they could be used | 12 |
|
| 7 | that they may be used | 6 |
|
| 8 | that they may be used | 6 |
|
