| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] [be] used [verb] their | 8 |
|
| 2 | [modal v] [be] used [verb] their | 8 |
|
| 3 | [be] used [verb] their [noun] | 9 |
|
| 4 | [be] used [verb] their [noun sg] | 6 |
|
