| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] to [be] | 4613 |
|
| 2 | [vb mod] to [be] | 4613 |
|
| 3 | used [prep] [be] | 2740 |
|
| 4 | used [prep] [be] | 2739 |
|
| 5 | used to [be] | 2739 |
|
| 6 | used to [be] | 2739 |
|
