| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] to [be] [adv] | 302 |
|
| 2 | [modal v] to [be] [adv] | 302 |
|
| 3 | used to [be] [adv] | 225 |
|
| 4 | used [prep] [be] [adv] | 197 |
|
| 5 | used to [be] [adv] | 197 |
|
