| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | is that [pers pn] [modal v] be used | 13 |
|
| 2 | is that [pron] [vb mod] be used | 13 |
|
| 3 | is that [pron] can be used | 10 |
|
| 4 | is that [pron] can be used | 10 |
|
| 5 | is that it [modal v] be used | 9 |
|
| 6 | is that it [modal v] be used | 9 |
|
