| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] to be | 4612 |
|
| 2 | [modal v] to be | 4612 |
|
| 3 | used to be | 2739 |
|
| 4 | used to [be] | 2739 |
|
| 5 | used [prep] be | 2739 |
|
| 6 | used to [be] | 2738 |
|
| 7 | used to be | 2738 |
|
